Home / 12,526.38-17,278.09-8,055.78

Finding the Fourth Proportional to 12,526.38, 17,278.09 and 8,055.78

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Solution

The fourth proportional to 12,526.38, 17,278.09 and 8,055.78 is: 11,111.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,526.38 : 17,278.09 = 8,055.78 : x
  2. Step 2: Convert to fraction form
    12,526.38/17,278.09 = 8,055.78/x
  3. Step 3: Cross multiply
    12,526.38x = 17,278.09 × 8,055.78
  4. Step 4: Simplify right side
    12,526.38x = 139,188,451.58
  5. Step 5: Solve for x
    x = 139,188,451.58/12,526.38
  6. Step 6: Final answer
    x = 11,111.63

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Half scale
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Double scale
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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.