Home / 21,024.28-31,550.28-11,170.72

Finding the Fourth Proportional to 21,024.28, 31,550.28 and 11,170.72

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Solution

The fourth proportional to 21,024.28, 31,550.28 and 11,170.72 is: 16,763.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,024.28 : 31,550.28 = 11,170.72 : x
  2. Step 2: Convert to fraction form
    21,024.28/31,550.28 = 11,170.72/x
  3. Step 3: Cross multiply
    21,024.28x = 31,550.28 × 11,170.72
  4. Step 4: Simplify right side
    21,024.28x = 352,439,343.80
  5. Step 5: Solve for x
    x = 352,439,343.80/21,024.28
  6. Step 6: Final answer
    x = 16,763.44

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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.