Home / 42,489.12-63,762.72-14,787.12

Finding the Fourth Proportional to 42,489.12, 63,762.72 and 14,787.12

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Solution

The fourth proportional to 42,489.12, 63,762.72 and 14,787.12 is: 22,190.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,489.12 : 63,762.72 = 14,787.12 : x
  2. Step 2: Convert to fraction form
    42,489.12/63,762.72 = 14,787.12/x
  3. Step 3: Cross multiply
    42,489.12x = 63,762.72 × 14,787.12
  4. Step 4: Simplify right side
    42,489.12x = 942,866,992.17
  5. Step 5: Solve for x
    x = 942,866,992.17/42,489.12
  6. Step 6: Final answer
    x = 22,190.79

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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.