Home / 28,305.92-39,062.40-15,730.88

Finding the Fourth Proportional to 28,305.92, 39,062.40 and 15,730.88

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Solution

The fourth proportional to 28,305.92, 39,062.40 and 15,730.88 is: 21,708.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,305.92 : 39,062.40 = 15,730.88 : x
  2. Step 2: Convert to fraction form
    28,305.92/39,062.40 = 15,730.88/x
  3. Step 3: Cross multiply
    28,305.92x = 39,062.40 × 15,730.88
  4. Step 4: Simplify right side
    28,305.92x = 614,485,926.91
  5. Step 5: Solve for x
    x = 614,485,926.91/28,305.92
  6. Step 6: Final answer
    x = 21,708.74

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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.