Home / 21,304.12-32,115.70-19,876.90

Finding the Fourth Proportional to 21,304.12, 32,115.70 and 19,876.90

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Solution

The fourth proportional to 21,304.12, 32,115.70 and 19,876.90 is: 29,964.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,304.12 : 32,115.70 = 19,876.90 : x
  2. Step 2: Convert to fraction form
    21,304.12/32,115.70 = 19,876.90/x
  3. Step 3: Cross multiply
    21,304.12x = 32,115.70 × 19,876.90
  4. Step 4: Simplify right side
    21,304.12x = 638,360,557.33
  5. Step 5: Solve for x
    x = 638,360,557.33/21,304.12
  6. Step 6: Final answer
    x = 29,964.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.