Home / 14,403.38-19,876.56-8,115.74

Finding the Fourth Proportional to 14,403.38, 19,876.56 and 8,115.74

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Solution

The fourth proportional to 14,403.38, 19,876.56 and 8,115.74 is: 11,199.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,403.38 : 19,876.56 = 8,115.74 : x
  2. Step 2: Convert to fraction form
    14,403.38/19,876.56 = 8,115.74/x
  3. Step 3: Cross multiply
    14,403.38x = 19,876.56 × 8,115.74
  4. Step 4: Simplify right side
    14,403.38x = 161,312,993.05
  5. Step 5: Solve for x
    x = 161,312,993.05/14,403.38
  6. Step 6: Final answer
    x = 11,199.66

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Find fourth proportional to 7,201.69, 9,938.28 and 4,057.87
Half scale
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Double scale
Find fourth proportional to 14,404.38, 19,877.94 and 8,116.74
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.