Home / 20,966.73-28,922.94-15,922.59

Finding the Fourth Proportional to 20,966.73, 28,922.94 and 15,922.59

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Solution

The fourth proportional to 20,966.73, 28,922.94 and 15,922.59 is: 21,964.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.73 : 28,922.94 = 15,922.59 : x
  2. Step 2: Convert to fraction form
    20,966.73/28,922.94 = 15,922.59/x
  3. Step 3: Cross multiply
    20,966.73x = 28,922.94 × 15,922.59
  4. Step 4: Simplify right side
    20,966.73x = 460,528,115.21
  5. Step 5: Solve for x
    x = 460,528,115.21/20,966.73
  6. Step 6: Final answer
    x = 21,964.71

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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.