Home / 21,414.20-32,121.30-17,785.40

Finding the Fourth Proportional to 21,414.20, 32,121.30 and 17,785.40

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Solution

The fourth proportional to 21,414.20, 32,121.30 and 17,785.40 is: 26,678.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,414.20 : 32,121.30 = 17,785.40 : x
  2. Step 2: Convert to fraction form
    21,414.20/32,121.30 = 17,785.40/x
  3. Step 3: Cross multiply
    21,414.20x = 32,121.30 × 17,785.40
  4. Step 4: Simplify right side
    21,414.20x = 571,290,169.02
  5. Step 5: Solve for x
    x = 571,290,169.02/21,414.20
  6. Step 6: Final answer
    x = 26,678.10

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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.