Home / 42,138.12-63,154.52-21,084.18

Finding the Fourth Proportional to 42,138.12, 63,154.52 and 21,084.18

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Solution

The fourth proportional to 42,138.12, 63,154.52 and 21,084.18 is: 31,599.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,138.12 : 63,154.52 = 21,084.18 : x
  2. Step 2: Convert to fraction form
    42,138.12/63,154.52 = 21,084.18/x
  3. Step 3: Cross multiply
    42,138.12x = 63,154.52 × 21,084.18
  4. Step 4: Simplify right side
    42,138.12x = 1,331,561,267.49
  5. Step 5: Solve for x
    x = 1,331,561,267.49/42,138.12
  6. Step 6: Final answer
    x = 31,599.92

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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.