Home / 21,442.16-32,178.90-21,279.26

Finding the Fourth Proportional to 21,442.16, 32,178.90 and 21,279.26

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Solution

The fourth proportional to 21,442.16, 32,178.90 and 21,279.26 is: 31,934.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,442.16 : 32,178.90 = 21,279.26 : x
  2. Step 2: Convert to fraction form
    21,442.16/32,178.90 = 21,279.26/x
  3. Step 3: Cross multiply
    21,442.16x = 32,178.90 × 21,279.26
  4. Step 4: Simplify right side
    21,442.16x = 684,743,179.61
  5. Step 5: Solve for x
    x = 684,743,179.61/21,442.16
  6. Step 6: Final answer
    x = 31,934.43

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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.