Home / 18,989.10-28,460.57-13,444.04

Finding the Fourth Proportional to 18,989.10, 28,460.57 and 13,444.04

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Solution

The fourth proportional to 18,989.10, 28,460.57 and 13,444.04 is: 20,149.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989.10 : 28,460.57 = 13,444.04 : x
  2. Step 2: Convert to fraction form
    18,989.10/28,460.57 = 13,444.04/x
  3. Step 3: Cross multiply
    18,989.10x = 28,460.57 × 13,444.04
  4. Step 4: Simplify right side
    18,989.10x = 382,625,045.43
  5. Step 5: Solve for x
    x = 382,625,045.43/18,989.10
  6. Step 6: Final answer
    x = 20,149.72

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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.