Home / 9,132.60-13,698.90-3,129.13

Finding the Fourth Proportional to 9,132.60, 13,698.90 and 3,129.13

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Solution

The fourth proportional to 9,132.60, 13,698.90 and 3,129.13 is: 4,693.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,132.60 : 13,698.90 = 3,129.13 : x
  2. Step 2: Convert to fraction form
    9,132.60/13,698.90 = 3,129.13/x
  3. Step 3: Cross multiply
    9,132.60x = 13,698.90 × 3,129.13
  4. Step 4: Simplify right side
    9,132.60x = 42,865,638.96
  5. Step 5: Solve for x
    x = 42,865,638.96/9,132.60
  6. Step 6: Final answer
    x = 4,693.70

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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.