Home / 10,343.08-15,529.20-7,419.79

Finding the Fourth Proportional to 10,343.08, 15,529.20 and 7,419.79

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Solution

The fourth proportional to 10,343.08, 15,529.20 and 7,419.79 is: 11,140.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,343.08 : 15,529.20 = 7,419.79 : x
  2. Step 2: Convert to fraction form
    10,343.08/15,529.20 = 7,419.79/x
  3. Step 3: Cross multiply
    10,343.08x = 15,529.20 × 7,419.79
  4. Step 4: Simplify right side
    10,343.08x = 115,223,402.87
  5. Step 5: Solve for x
    x = 115,223,402.87/10,343.08
  6. Step 6: Final answer
    x = 11,140.14

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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.