Home / 15,129.47-20,861.19-11,302.22

Finding the Fourth Proportional to 15,129.47, 20,861.19 and 11,302.22

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Solution

The fourth proportional to 15,129.47, 20,861.19 and 11,302.22 is: 15,584.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,129.47 : 20,861.19 = 11,302.22 : x
  2. Step 2: Convert to fraction form
    15,129.47/20,861.19 = 11,302.22/x
  3. Step 3: Cross multiply
    15,129.47x = 20,861.19 × 11,302.22
  4. Step 4: Simplify right side
    15,129.47x = 235,777,654.54
  5. Step 5: Solve for x
    x = 235,777,654.54/15,129.47
  6. Step 6: Final answer
    x = 15,584.00

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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.