Home / 21,732.80-32,557.28-12,974.72

Finding the Fourth Proportional to 21,732.80, 32,557.28 and 12,974.72

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Solution

The fourth proportional to 21,732.80, 32,557.28 and 12,974.72 is: 19,437.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,732.80 : 32,557.28 = 12,974.72 : x
  2. Step 2: Convert to fraction form
    21,732.80/32,557.28 = 12,974.72/x
  3. Step 3: Cross multiply
    21,732.80x = 32,557.28 × 12,974.72
  4. Step 4: Simplify right side
    21,732.80x = 422,421,591.96
  5. Step 5: Solve for x
    x = 422,421,591.96/21,732.80
  6. Step 6: Final answer
    x = 19,437.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.