Home / 13,760.28-18,979.52-8,458.02

Finding the Fourth Proportional to 13,760.28, 18,979.52 and 8,458.02

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Solution

The fourth proportional to 13,760.28, 18,979.52 and 8,458.02 is: 11,666.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,760.28 : 18,979.52 = 8,458.02 : x
  2. Step 2: Convert to fraction form
    13,760.28/18,979.52 = 8,458.02/x
  3. Step 3: Cross multiply
    13,760.28x = 18,979.52 × 8,458.02
  4. Step 4: Simplify right side
    13,760.28x = 160,529,117.46
  5. Step 5: Solve for x
    x = 160,529,117.46/13,760.28
  6. Step 6: Final answer
    x = 11,666.12

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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.