Home / 10,913.22-15,052.23-7,129.17

Finding the Fourth Proportional to 10,913.22, 15,052.23 and 7,129.17

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Solution

The fourth proportional to 10,913.22, 15,052.23 and 7,129.17 is: 9,833.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,913.22 : 15,052.23 = 7,129.17 : x
  2. Step 2: Convert to fraction form
    10,913.22/15,052.23 = 7,129.17/x
  3. Step 3: Cross multiply
    10,913.22x = 15,052.23 × 7,129.17
  4. Step 4: Simplify right side
    10,913.22x = 107,309,906.55
  5. Step 5: Solve for x
    x = 107,309,906.55/10,913.22
  6. Step 6: Final answer
    x = 9,833.02

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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.