Home / 28,982.20-43,502.10-14,207.80

Finding the Fourth Proportional to 28,982.20, 43,502.10 and 14,207.80

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Solution

The fourth proportional to 28,982.20, 43,502.10 and 14,207.80 is: 21,325.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,982.20 : 43,502.10 = 14,207.80 : x
  2. Step 2: Convert to fraction form
    28,982.20/43,502.10 = 14,207.80/x
  3. Step 3: Cross multiply
    28,982.20x = 43,502.10 × 14,207.80
  4. Step 4: Simplify right side
    28,982.20x = 618,069,136.38
  5. Step 5: Solve for x
    x = 618,069,136.38/28,982.20
  6. Step 6: Final answer
    x = 21,325.82

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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.