Home / 42,469.61-63,704.80-12,887.45

Finding the Fourth Proportional to 42,469.61, 63,704.80 and 12,887.45

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Solution

The fourth proportional to 42,469.61, 63,704.80 and 12,887.45 is: 19,331.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,469.61 : 63,704.80 = 12,887.45 : x
  2. Step 2: Convert to fraction form
    42,469.61/63,704.80 = 12,887.45/x
  3. Step 3: Cross multiply
    42,469.61x = 63,704.80 × 12,887.45
  4. Step 4: Simplify right side
    42,469.61x = 820,992,182.07
  5. Step 5: Solve for x
    x = 820,992,182.07/42,469.61
  6. Step 6: Final answer
    x = 19,331.29

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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.