Home / 28,062.18-38,728.17-15,489.54

Finding the Fourth Proportional to 28,062.18, 38,728.17 and 15,489.54

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Solution

The fourth proportional to 28,062.18, 38,728.17 and 15,489.54 is: 21,376.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,062.18 : 38,728.17 = 15,489.54 : x
  2. Step 2: Convert to fraction form
    28,062.18/38,728.17 = 15,489.54/x
  3. Step 3: Cross multiply
    28,062.18x = 38,728.17 × 15,489.54
  4. Step 4: Simplify right side
    28,062.18x = 599,881,538.34
  5. Step 5: Solve for x
    x = 599,881,538.34/28,062.18
  6. Step 6: Final answer
    x = 21,376.87

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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.