Home / 42,479-63,747.75-14,777

Finding the Fourth Proportional to 42,479, 63,747.75 and 14,777

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Solution

The fourth proportional to 42,479, 63,747.75 and 14,777 is: 22,175.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,479 : 63,747.75 = 14,777 : x
  2. Step 2: Convert to fraction form
    42,479/63,747.75 = 14,777/x
  3. Step 3: Cross multiply
    42,479x = 63,747.75 × 14,777
  4. Step 4: Simplify right side
    42,479x = 942,000,501.75
  5. Step 5: Solve for x
    x = 942,000,501.75/42,479
  6. Step 6: Final answer
    x = 22,175.68

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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.