Home / 21,426.96-29,566.56-11,866.12

Finding the Fourth Proportional to 21,426.96, 29,566.56 and 11,866.12

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Solution

The fourth proportional to 21,426.96, 29,566.56 and 11,866.12 is: 16,373.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,426.96 : 29,566.56 = 11,866.12 : x
  2. Step 2: Convert to fraction form
    21,426.96/29,566.56 = 11,866.12/x
  3. Step 3: Cross multiply
    21,426.96x = 29,566.56 × 11,866.12
  4. Step 4: Simplify right side
    21,426.96x = 350,840,348.95
  5. Step 5: Solve for x
    x = 350,840,348.95/21,426.96
  6. Step 6: Final answer
    x = 16,373.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.