Home / 20,932.40-28,888.31-11,982.71

Finding the Fourth Proportional to 20,932.40, 28,888.31 and 11,982.71

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Solution

The fourth proportional to 20,932.40, 28,888.31 and 11,982.71 is: 16,537.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.40 : 28,888.31 = 11,982.71 : x
  2. Step 2: Convert to fraction form
    20,932.40/28,888.31 = 11,982.71/x
  3. Step 3: Cross multiply
    20,932.40x = 28,888.31 × 11,982.71
  4. Step 4: Simplify right side
    20,932.40x = 346,160,126.64
  5. Step 5: Solve for x
    x = 346,160,126.64/20,932.40
  6. Step 6: Final answer
    x = 16,537.05

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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.