Home / 11,915.13-17,870.53-4,517.16

Finding the Fourth Proportional to 11,915.13, 17,870.53 and 4,517.16

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Solution

The fourth proportional to 11,915.13, 17,870.53 and 4,517.16 is: 6,774.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.13 : 17,870.53 = 4,517.16 : x
  2. Step 2: Convert to fraction form
    11,915.13/17,870.53 = 4,517.16/x
  3. Step 3: Cross multiply
    11,915.13x = 17,870.53 × 4,517.16
  4. Step 4: Simplify right side
    11,915.13x = 80,724,043.29
  5. Step 5: Solve for x
    x = 80,724,043.29/11,915.13
  6. Step 6: Final answer
    x = 6,774.92

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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.