Home / 21,560.14-29,766.66-14,765.56

Finding the Fourth Proportional to 21,560.14, 29,766.66 and 14,765.56

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Solution

The fourth proportional to 21,560.14, 29,766.66 and 14,765.56 is: 20,385.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,560.14 : 29,766.66 = 14,765.56 : x
  2. Step 2: Convert to fraction form
    21,560.14/29,766.66 = 14,765.56/x
  3. Step 3: Cross multiply
    21,560.14x = 29,766.66 × 14,765.56
  4. Step 4: Simplify right side
    21,560.14x = 439,521,399.03
  5. Step 5: Solve for x
    x = 439,521,399.03/21,560.14
  6. Step 6: Final answer
    x = 20,385.83

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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.