Home / 28,252.84-38,990.10-15,677.68

Finding the Fourth Proportional to 28,252.84, 38,990.10 and 15,677.68

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Solution

The fourth proportional to 28,252.84, 38,990.10 and 15,677.68 is: 21,635.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,252.84 : 38,990.10 = 15,677.68 : x
  2. Step 2: Convert to fraction form
    28,252.84/38,990.10 = 15,677.68/x
  3. Step 3: Cross multiply
    28,252.84x = 38,990.10 × 15,677.68
  4. Step 4: Simplify right side
    28,252.84x = 611,274,310.97
  5. Step 5: Solve for x
    x = 611,274,310.97/28,252.84
  6. Step 6: Final answer
    x = 21,635.85

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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.