Home / 10,915.71-16,373.56-3,124.52

Finding the Fourth Proportional to 10,915.71, 16,373.56 and 3,124.52

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Solution

The fourth proportional to 10,915.71, 16,373.56 and 3,124.52 is: 4,686.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,915.71 : 16,373.56 = 3,124.52 : x
  2. Step 2: Convert to fraction form
    10,915.71/16,373.56 = 3,124.52/x
  3. Step 3: Cross multiply
    10,915.71x = 16,373.56 × 3,124.52
  4. Step 4: Simplify right side
    10,915.71x = 51,159,515.69
  5. Step 5: Solve for x
    x = 51,159,515.69/10,915.71
  6. Step 6: Final answer
    x = 4,686.78

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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.