Home / 28,616.18-39,489.23-15,869.88

Finding the Fourth Proportional to 28,616.18, 39,489.23 and 15,869.88

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Solution

The fourth proportional to 28,616.18, 39,489.23 and 15,869.88 is: 21,899.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,616.18 : 39,489.23 = 15,869.88 : x
  2. Step 2: Convert to fraction form
    28,616.18/39,489.23 = 15,869.88/x
  3. Step 3: Cross multiply
    28,616.18x = 39,489.23 × 15,869.88
  4. Step 4: Simplify right side
    28,616.18x = 626,689,341.39
  5. Step 5: Solve for x
    x = 626,689,341.39/28,616.18
  6. Step 6: Final answer
    x = 21,899.83

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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.