Home / 15,440.30-21,311.68-10,661.04

Finding the Fourth Proportional to 15,440.30, 21,311.68 and 10,661.04

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Solution

The fourth proportional to 15,440.30, 21,311.68 and 10,661.04 is: 14,715.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,440.30 : 21,311.68 = 10,661.04 : x
  2. Step 2: Convert to fraction form
    15,440.30/21,311.68 = 10,661.04/x
  3. Step 3: Cross multiply
    15,440.30x = 21,311.68 × 10,661.04
  4. Step 4: Simplify right side
    15,440.30x = 227,204,672.95
  5. Step 5: Solve for x
    x = 227,204,672.95/15,440.30
  6. Step 6: Final answer
    x = 14,715.04

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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.