Home / 30,934.87-42,689.70-17,508.78

Finding the Fourth Proportional to 30,934.87, 42,689.70 and 17,508.78

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Solution

The fourth proportional to 30,934.87, 42,689.70 and 17,508.78 is: 24,161.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,934.87 : 42,689.70 = 17,508.78 : x
  2. Step 2: Convert to fraction form
    30,934.87/42,689.70 = 17,508.78/x
  3. Step 3: Cross multiply
    30,934.87x = 42,689.70 × 17,508.78
  4. Step 4: Simplify right side
    30,934.87x = 747,444,565.57
  5. Step 5: Solve for x
    x = 747,444,565.57/30,934.87
  6. Step 6: Final answer
    x = 24,161.88

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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.