Home / 42,229.53-63,334.22-12,639.42

Finding the Fourth Proportional to 42,229.53, 63,334.22 and 12,639.42

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Solution

The fourth proportional to 42,229.53, 63,334.22 and 12,639.42 is: 18,956.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,229.53 : 63,334.22 = 12,639.42 : x
  2. Step 2: Convert to fraction form
    42,229.53/63,334.22 = 12,639.42/x
  3. Step 3: Cross multiply
    42,229.53x = 63,334.22 × 12,639.42
  4. Step 4: Simplify right side
    42,229.53x = 800,507,743.76
  5. Step 5: Solve for x
    x = 800,507,743.76/42,229.53
  6. Step 6: Final answer
    x = 18,956.11

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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.