Home / 28,915.20-43,340.40-14,869.80

Finding the Fourth Proportional to 28,915.20, 43,340.40 and 14,869.80

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Solution

The fourth proportional to 28,915.20, 43,340.40 and 14,869.80 is: 22,288.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,915.20 : 43,340.40 = 14,869.80 : x
  2. Step 2: Convert to fraction form
    28,915.20/43,340.40 = 14,869.80/x
  3. Step 3: Cross multiply
    28,915.20x = 43,340.40 × 14,869.80
  4. Step 4: Simplify right side
    28,915.20x = 644,463,079.92
  5. Step 5: Solve for x
    x = 644,463,079.92/28,915.20
  6. Step 6: Final answer
    x = 22,288.04

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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.