Home / 21,913.38-32,870.07-12,057.30

Finding the Fourth Proportional to 21,913.38, 32,870.07 and 12,057.30

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Solution

The fourth proportional to 21,913.38, 32,870.07 and 12,057.30 is: 18,085.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,913.38 : 32,870.07 = 12,057.30 : x
  2. Step 2: Convert to fraction form
    21,913.38/32,870.07 = 12,057.30/x
  3. Step 3: Cross multiply
    21,913.38x = 32,870.07 × 12,057.30
  4. Step 4: Simplify right side
    21,913.38x = 396,324,295.01
  5. Step 5: Solve for x
    x = 396,324,295.01/21,913.38
  6. Step 6: Final answer
    x = 18,085.95

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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.