Home / 20,544.65-28,348-12,589.44

Finding the Fourth Proportional to 20,544.65, 28,348 and 12,589.44

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Solution

The fourth proportional to 20,544.65, 28,348 and 12,589.44 is: 17,371.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,544.65 : 28,348 = 12,589.44 : x
  2. Step 2: Convert to fraction form
    20,544.65/28,348 = 12,589.44/x
  3. Step 3: Cross multiply
    20,544.65x = 28,348 × 12,589.44
  4. Step 4: Simplify right side
    20,544.65x = 356,885,445.12
  5. Step 5: Solve for x
    x = 356,885,445.12/20,544.65
  6. Step 6: Final answer
    x = 17,371.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.