Home / 28,179.12-42,269.98-15,689.74

Finding the Fourth Proportional to 28,179.12, 42,269.98 and 15,689.74

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Solution

The fourth proportional to 28,179.12, 42,269.98 and 15,689.74 is: 23,535.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.12 : 42,269.98 = 15,689.74 : x
  2. Step 2: Convert to fraction form
    28,179.12/42,269.98 = 15,689.74/x
  3. Step 3: Cross multiply
    28,179.12x = 42,269.98 × 15,689.74
  4. Step 4: Simplify right side
    28,179.12x = 663,204,996.01
  5. Step 5: Solve for x
    x = 663,204,996.01/28,179.12
  6. Step 6: Final answer
    x = 23,535.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.