Home / 15,915.90-21,960.12-9,544.44

Finding the Fourth Proportional to 15,915.90, 21,960.12 and 9,544.44

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Solution

The fourth proportional to 15,915.90, 21,960.12 and 9,544.44 is: 13,169.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,915.90 : 21,960.12 = 9,544.44 : x
  2. Step 2: Convert to fraction form
    15,915.90/21,960.12 = 9,544.44/x
  3. Step 3: Cross multiply
    15,915.90x = 21,960.12 × 9,544.44
  4. Step 4: Simplify right side
    15,915.90x = 209,597,047.73
  5. Step 5: Solve for x
    x = 209,597,047.73/15,915.90
  6. Step 6: Final answer
    x = 13,169.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.