Home / 21,222.12-31,834.80-6,432.24

Finding the Fourth Proportional to 21,222.12, 31,834.80 and 6,432.24

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Solution

The fourth proportional to 21,222.12, 31,834.80 and 6,432.24 is: 9,648.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.12 : 31,834.80 = 6,432.24 : x
  2. Step 2: Convert to fraction form
    21,222.12/31,834.80 = 6,432.24/x
  3. Step 3: Cross multiply
    21,222.12x = 31,834.80 × 6,432.24
  4. Step 4: Simplify right side
    21,222.12x = 204,769,073.95
  5. Step 5: Solve for x
    x = 204,769,073.95/21,222.12
  6. Step 6: Final answer
    x = 9,648.85

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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.