Home / 42,689.74-64,042.20-14,612.92

Finding the Fourth Proportional to 42,689.74, 64,042.20 and 14,612.92

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Solution

The fourth proportional to 42,689.74, 64,042.20 and 14,612.92 is: 21,921.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,689.74 : 64,042.20 = 14,612.92 : x
  2. Step 2: Convert to fraction form
    42,689.74/64,042.20 = 14,612.92/x
  3. Step 3: Cross multiply
    42,689.74x = 64,042.20 × 14,612.92
  4. Step 4: Simplify right side
    42,689.74x = 935,843,545.22
  5. Step 5: Solve for x
    x = 935,843,545.22/42,689.74
  6. Step 6: Final answer
    x = 21,921.98

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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.