Home / 14,775.72-20,390.40-8,061.21

Finding the Fourth Proportional to 14,775.72, 20,390.40 and 8,061.21

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Solution

The fourth proportional to 14,775.72, 20,390.40 and 8,061.21 is: 11,124.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,775.72 : 20,390.40 = 8,061.21 : x
  2. Step 2: Convert to fraction form
    14,775.72/20,390.40 = 8,061.21/x
  3. Step 3: Cross multiply
    14,775.72x = 20,390.40 × 8,061.21
  4. Step 4: Simplify right side
    14,775.72x = 164,371,296.38
  5. Step 5: Solve for x
    x = 164,371,296.38/14,775.72
  6. Step 6: Final answer
    x = 11,124.42

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Half scale
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Double scale
Find fourth proportional to 14,776.72, 20,391.78 and 8,062.21
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.