Home / 21,810.20-32,715.30-14,811.80

Finding the Fourth Proportional to 21,810.20, 32,715.30 and 14,811.80

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Solution

The fourth proportional to 21,810.20, 32,715.30 and 14,811.80 is: 22,217.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,810.20 : 32,715.30 = 14,811.80 : x
  2. Step 2: Convert to fraction form
    21,810.20/32,715.30 = 14,811.80/x
  3. Step 3: Cross multiply
    21,810.20x = 32,715.30 × 14,811.80
  4. Step 4: Simplify right side
    21,810.20x = 484,572,480.54
  5. Step 5: Solve for x
    x = 484,572,480.54/21,810.20
  6. Step 6: Final answer
    x = 22,217.70

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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.