Home / 15,391.28-23,086.92-8,812.91

Finding the Fourth Proportional to 15,391.28, 23,086.92 and 8,812.91

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Solution

The fourth proportional to 15,391.28, 23,086.92 and 8,812.91 is: 13,219.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,391.28 : 23,086.92 = 8,812.91 : x
  2. Step 2: Convert to fraction form
    15,391.28/23,086.92 = 8,812.91/x
  3. Step 3: Cross multiply
    15,391.28x = 23,086.92 × 8,812.91
  4. Step 4: Simplify right side
    15,391.28x = 203,462,948.14
  5. Step 5: Solve for x
    x = 203,462,948.14/15,391.28
  6. Step 6: Final answer
    x = 13,219.37

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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.