Home / 13,097.28-18,080.64-9,121.44

Finding the Fourth Proportional to 13,097.28, 18,080.64 and 9,121.44

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Solution

The fourth proportional to 13,097.28, 18,080.64 and 9,121.44 is: 12,592.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,097.28 : 18,080.64 = 9,121.44 : x
  2. Step 2: Convert to fraction form
    13,097.28/18,080.64 = 9,121.44/x
  3. Step 3: Cross multiply
    13,097.28x = 18,080.64 × 9,121.44
  4. Step 4: Simplify right side
    13,097.28x = 164,921,472.92
  5. Step 5: Solve for x
    x = 164,921,472.92/13,097.28
  6. Step 6: Final answer
    x = 12,592.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.