Home / 21,000.12-31,473.45-11,144.04

Finding the Fourth Proportional to 21,000.12, 31,473.45 and 11,144.04

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Solution

The fourth proportional to 21,000.12, 31,473.45 and 11,144.04 is: 16,701.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,000.12 : 31,473.45 = 11,144.04 : x
  2. Step 2: Convert to fraction form
    21,000.12/31,473.45 = 11,144.04/x
  3. Step 3: Cross multiply
    21,000.12x = 31,473.45 × 11,144.04
  4. Step 4: Simplify right side
    21,000.12x = 350,741,385.74
  5. Step 5: Solve for x
    x = 350,741,385.74/21,000.12
  6. Step 6: Final answer
    x = 16,701.88

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1.5x scale

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.