Home / 42,142.20-63,212.64-12,560.16

Finding the Fourth Proportional to 42,142.20, 63,212.64 and 12,560.16

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Solution

The fourth proportional to 42,142.20, 63,212.64 and 12,560.16 is: 18,840.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,142.20 : 63,212.64 = 12,560.16 : x
  2. Step 2: Convert to fraction form
    42,142.20/63,212.64 = 12,560.16/x
  3. Step 3: Cross multiply
    42,142.20x = 63,212.64 × 12,560.16
  4. Step 4: Simplify right side
    42,142.20x = 793,960,872.42
  5. Step 5: Solve for x
    x = 793,960,872.42/42,142.20
  6. Step 6: Final answer
    x = 18,840.04

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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.