Home / 10,915.76-16,374.32-3,125.16

Finding the Fourth Proportional to 10,915.76, 16,374.32 and 3,125.16

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Solution

The fourth proportional to 10,915.76, 16,374.32 and 3,125.16 is: 4,687.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,915.76 : 16,374.32 = 3,125.16 : x
  2. Step 2: Convert to fraction form
    10,915.76/16,374.32 = 3,125.16/x
  3. Step 3: Cross multiply
    10,915.76x = 16,374.32 × 3,125.16
  4. Step 4: Simplify right side
    10,915.76x = 51,172,369.89
  5. Step 5: Solve for x
    x = 51,172,369.89/10,915.76
  6. Step 6: Final answer
    x = 4,687.93

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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.