Home / 42,125.40-63,187.49-12,543.39

Finding the Fourth Proportional to 42,125.40, 63,187.49 and 12,543.39

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Solution

The fourth proportional to 42,125.40, 63,187.49 and 12,543.39 is: 18,814.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,125.40 : 63,187.49 = 12,543.39 : x
  2. Step 2: Convert to fraction form
    42,125.40/63,187.49 = 12,543.39/x
  3. Step 3: Cross multiply
    42,125.40x = 63,187.49 × 12,543.39
  4. Step 4: Simplify right side
    42,125.40x = 792,585,361.55
  5. Step 5: Solve for x
    x = 792,585,361.55/42,125.40
  6. Step 6: Final answer
    x = 18,814.90

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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.