Home / 10,407.67-15,612.81-3,385.80

Finding the Fourth Proportional to 10,407.67, 15,612.81 and 3,385.80

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Solution

The fourth proportional to 10,407.67, 15,612.81 and 3,385.80 is: 5,079.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,407.67 : 15,612.81 = 3,385.80 : x
  2. Step 2: Convert to fraction form
    10,407.67/15,612.81 = 3,385.80/x
  3. Step 3: Cross multiply
    10,407.67x = 15,612.81 × 3,385.80
  4. Step 4: Simplify right side
    10,407.67x = 52,861,893.04
  5. Step 5: Solve for x
    x = 52,861,893.04/10,407.67
  6. Step 6: Final answer
    x = 5,079.13

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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.