Home / 15,921.64-23,900.91-8,540.52

Finding the Fourth Proportional to 15,921.64, 23,900.91 and 8,540.52

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Solution

The fourth proportional to 15,921.64, 23,900.91 and 8,540.52 is: 12,820.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,921.64 : 23,900.91 = 8,540.52 : x
  2. Step 2: Convert to fraction form
    15,921.64/23,900.91 = 8,540.52/x
  3. Step 3: Cross multiply
    15,921.64x = 23,900.91 × 8,540.52
  4. Step 4: Simplify right side
    15,921.64x = 204,126,199.87
  5. Step 5: Solve for x
    x = 204,126,199.87/15,921.64
  6. Step 6: Final answer
    x = 12,820.68

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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.