Home / 21,764.83-32,661.84-13,979.11

Finding the Fourth Proportional to 21,764.83, 32,661.84 and 13,979.11

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Solution

The fourth proportional to 21,764.83, 32,661.84 and 13,979.11 is: 20,978.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,764.83 : 32,661.84 = 13,979.11 : x
  2. Step 2: Convert to fraction form
    21,764.83/32,661.84 = 13,979.11/x
  3. Step 3: Cross multiply
    21,764.83x = 32,661.84 × 13,979.11
  4. Step 4: Simplify right side
    21,764.83x = 456,583,454.16
  5. Step 5: Solve for x
    x = 456,583,454.16/21,764.83
  6. Step 6: Final answer
    x = 20,978.04

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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.