Home / 15,931.92-23,882.28-8,915.36

Finding the Fourth Proportional to 15,931.92, 23,882.28 and 8,915.36

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Solution

The fourth proportional to 15,931.92, 23,882.28 and 8,915.36 is: 13,364.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,931.92 : 23,882.28 = 8,915.36 : x
  2. Step 2: Convert to fraction form
    15,931.92/23,882.28 = 8,915.36/x
  3. Step 3: Cross multiply
    15,931.92x = 23,882.28 × 8,915.36
  4. Step 4: Simplify right side
    15,931.92x = 212,919,123.82
  5. Step 5: Solve for x
    x = 212,919,123.82/15,931.92
  6. Step 6: Final answer
    x = 13,364.31

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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.