Home / 42,778.56-64,167.68-11,613.76

Finding the Fourth Proportional to 42,778.56, 64,167.68 and 11,613.76

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Solution

The fourth proportional to 42,778.56, 64,167.68 and 11,613.76 is: 17,420.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,778.56 : 64,167.68 = 11,613.76 : x
  2. Step 2: Convert to fraction form
    42,778.56/64,167.68 = 11,613.76/x
  3. Step 3: Cross multiply
    42,778.56x = 64,167.68 × 11,613.76
  4. Step 4: Simplify right side
    42,778.56x = 745,228,035.28
  5. Step 5: Solve for x
    x = 745,228,035.28/42,778.56
  6. Step 6: Final answer
    x = 17,420.60

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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.