Home / 28,263.38-39,005.28-15,688.13

Finding the Fourth Proportional to 28,263.38, 39,005.28 and 15,688.13

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Solution

The fourth proportional to 28,263.38, 39,005.28 and 15,688.13 is: 21,650.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,263.38 : 39,005.28 = 15,688.13 : x
  2. Step 2: Convert to fraction form
    28,263.38/39,005.28 = 15,688.13/x
  3. Step 3: Cross multiply
    28,263.38x = 39,005.28 × 15,688.13
  4. Step 4: Simplify right side
    28,263.38x = 611,919,708.30
  5. Step 5: Solve for x
    x = 611,919,708.30/28,263.38
  6. Step 6: Final answer
    x = 21,650.62

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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.