Home / 10,129.14-13,976.64-5,652.72

Finding the Fourth Proportional to 10,129.14, 13,976.64 and 5,652.72

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Solution

The fourth proportional to 10,129.14, 13,976.64 and 5,652.72 is: 7,799.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.14 : 13,976.64 = 5,652.72 : x
  2. Step 2: Convert to fraction form
    10,129.14/13,976.64 = 5,652.72/x
  3. Step 3: Cross multiply
    10,129.14x = 13,976.64 × 5,652.72
  4. Step 4: Simplify right side
    10,129.14x = 79,006,032.46
  5. Step 5: Solve for x
    x = 79,006,032.46/10,129.14
  6. Step 6: Final answer
    x = 7,799.88

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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.