Home / 20,581.66-28,402.68-11,150.22

Finding the Fourth Proportional to 20,581.66, 28,402.68 and 11,150.22

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Solution

The fourth proportional to 20,581.66, 28,402.68 and 11,150.22 is: 15,387.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.66 : 28,402.68 = 11,150.22 : x
  2. Step 2: Convert to fraction form
    20,581.66/28,402.68 = 11,150.22/x
  3. Step 3: Cross multiply
    20,581.66x = 28,402.68 × 11,150.22
  4. Step 4: Simplify right side
    20,581.66x = 316,696,088.78
  5. Step 5: Solve for x
    x = 316,696,088.78/20,581.66
  6. Step 6: Final answer
    x = 15,387.30

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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.