Home / 21,591.52-29,780.40-16,286.56

Finding the Fourth Proportional to 21,591.52, 29,780.40 and 16,286.56

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Solution

The fourth proportional to 21,591.52, 29,780.40 and 16,286.56 is: 22,463.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,591.52 : 29,780.40 = 16,286.56 : x
  2. Step 2: Convert to fraction form
    21,591.52/29,780.40 = 16,286.56/x
  3. Step 3: Cross multiply
    21,591.52x = 29,780.40 × 16,286.56
  4. Step 4: Simplify right side
    21,591.52x = 485,020,271.42
  5. Step 5: Solve for x
    x = 485,020,271.42/21,591.52
  6. Step 6: Final answer
    x = 22,463.46

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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.