Home / 21,270.12-32,064.42-19,842.90

Finding the Fourth Proportional to 21,270.12, 32,064.42 and 19,842.90

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Solution

The fourth proportional to 21,270.12, 32,064.42 and 19,842.90 is: 29,912.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.12 : 32,064.42 = 19,842.90 : x
  2. Step 2: Convert to fraction form
    21,270.12/32,064.42 = 19,842.90/x
  3. Step 3: Cross multiply
    21,270.12x = 32,064.42 × 19,842.90
  4. Step 4: Simplify right side
    21,270.12x = 636,251,079.62
  5. Step 5: Solve for x
    x = 636,251,079.62/21,270.12
  6. Step 6: Final answer
    x = 29,912.91

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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.