Home / 28,691.21-39,592.56-15,945.29

Finding the Fourth Proportional to 28,691.21, 39,592.56 and 15,945.29

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Solution

The fourth proportional to 28,691.21, 39,592.56 and 15,945.29 is: 22,003.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,691.21 : 39,592.56 = 15,945.29 : x
  2. Step 2: Convert to fraction form
    28,691.21/39,592.56 = 15,945.29/x
  3. Step 3: Cross multiply
    28,691.21x = 39,592.56 × 15,945.29
  4. Step 4: Simplify right side
    28,691.21x = 631,314,861.35
  5. Step 5: Solve for x
    x = 631,314,861.35/28,691.21
  6. Step 6: Final answer
    x = 22,003.77

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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.