Home / 15,679.28-23,519.16-3,992.72

Finding the Fourth Proportional to 15,679.28, 23,519.16 and 3,992.72

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Solution

The fourth proportional to 15,679.28, 23,519.16 and 3,992.72 is: 5,989.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,679.28 : 23,519.16 = 3,992.72 : x
  2. Step 2: Convert to fraction form
    15,679.28/23,519.16 = 3,992.72/x
  3. Step 3: Cross multiply
    15,679.28x = 23,519.16 × 3,992.72
  4. Step 4: Simplify right side
    15,679.28x = 93,905,420.52
  5. Step 5: Solve for x
    x = 93,905,420.52/15,679.28
  6. Step 6: Final answer
    x = 5,989.14

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1.5x scale

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.