Home / 21,808.36-32,686.14-9,945.88

Finding the Fourth Proportional to 21,808.36, 32,686.14 and 9,945.88

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Solution

The fourth proportional to 21,808.36, 32,686.14 and 9,945.88 is: 14,906.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,808.36 : 32,686.14 = 9,945.88 : x
  2. Step 2: Convert to fraction form
    21,808.36/32,686.14 = 9,945.88/x
  3. Step 3: Cross multiply
    21,808.36x = 32,686.14 × 9,945.88
  4. Step 4: Simplify right side
    21,808.36x = 325,092,426.10
  5. Step 5: Solve for x
    x = 325,092,426.10/21,808.36
  6. Step 6: Final answer
    x = 14,906.78

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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.