Home / 21,454.47-32,203.23-19,990.55

Finding the Fourth Proportional to 21,454.47, 32,203.23 and 19,990.55

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Solution

The fourth proportional to 21,454.47, 32,203.23 and 19,990.55 is: 30,005.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,454.47 : 32,203.23 = 19,990.55 : x
  2. Step 2: Convert to fraction form
    21,454.47/32,203.23 = 19,990.55/x
  3. Step 3: Cross multiply
    21,454.47x = 32,203.23 × 19,990.55
  4. Step 4: Simplify right side
    21,454.47x = 643,760,244.44
  5. Step 5: Solve for x
    x = 643,760,244.44/21,454.47
  6. Step 6: Final answer
    x = 30,005.88

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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.