Home / 21,622.80-32,434.20-11,781.30

Finding the Fourth Proportional to 21,622.80, 32,434.20 and 11,781.30

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Solution

The fourth proportional to 21,622.80, 32,434.20 and 11,781.30 is: 17,671.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,622.80 : 32,434.20 = 11,781.30 : x
  2. Step 2: Convert to fraction form
    21,622.80/32,434.20 = 11,781.30/x
  3. Step 3: Cross multiply
    21,622.80x = 32,434.20 × 11,781.30
  4. Step 4: Simplify right side
    21,622.80x = 382,117,040.46
  5. Step 5: Solve for x
    x = 382,117,040.46/21,622.80
  6. Step 6: Final answer
    x = 17,671.95

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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.