Home / 18,416.31-25,429.50-15,013.86

Finding the Fourth Proportional to 18,416.31, 25,429.50 and 15,013.86

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Solution

The fourth proportional to 18,416.31, 25,429.50 and 15,013.86 is: 20,731.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,416.31 : 25,429.50 = 15,013.86 : x
  2. Step 2: Convert to fraction form
    18,416.31/25,429.50 = 15,013.86/x
  3. Step 3: Cross multiply
    18,416.31x = 25,429.50 × 15,013.86
  4. Step 4: Simplify right side
    18,416.31x = 381,794,952.87
  5. Step 5: Solve for x
    x = 381,794,952.87/18,416.31
  6. Step 6: Final answer
    x = 20,731.35

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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.