Home / 13,142.15-19,693.04-8,919.92

Finding the Fourth Proportional to 13,142.15, 19,693.04 and 8,919.92

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Solution

The fourth proportional to 13,142.15, 19,693.04 and 8,919.92 is: 13,366.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,142.15 : 19,693.04 = 8,919.92 : x
  2. Step 2: Convert to fraction form
    13,142.15/19,693.04 = 8,919.92/x
  3. Step 3: Cross multiply
    13,142.15x = 19,693.04 × 8,919.92
  4. Step 4: Simplify right side
    13,142.15x = 175,660,339.04
  5. Step 5: Solve for x
    x = 175,660,339.04/13,142.15
  6. Step 6: Final answer
    x = 13,366.18

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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.