Home / 15,815.31-23,726.57-5,426.43

Finding the Fourth Proportional to 15,815.31, 23,726.57 and 5,426.43

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Solution

The fourth proportional to 15,815.31, 23,726.57 and 5,426.43 is: 8,140.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,815.31 : 23,726.57 = 5,426.43 : x
  2. Step 2: Convert to fraction form
    15,815.31/23,726.57 = 5,426.43/x
  3. Step 3: Cross multiply
    15,815.31x = 23,726.57 × 5,426.43
  4. Step 4: Simplify right side
    15,815.31x = 128,750,544.11
  5. Step 5: Solve for x
    x = 128,750,544.11/15,815.31
  6. Step 6: Final answer
    x = 8,140.88

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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.