Home / 13,270.10-18,306.61-8,555.90

Finding the Fourth Proportional to 13,270.10, 18,306.61 and 8,555.90

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Solution

The fourth proportional to 13,270.10, 18,306.61 and 8,555.90 is: 11,803.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,270.10 : 18,306.61 = 8,555.90 : x
  2. Step 2: Convert to fraction form
    13,270.10/18,306.61 = 8,555.90/x
  3. Step 3: Cross multiply
    13,270.10x = 18,306.61 × 8,555.90
  4. Step 4: Simplify right side
    13,270.10x = 156,629,411.58
  5. Step 5: Solve for x
    x = 156,629,411.58/13,270.10
  6. Step 6: Final answer
    x = 11,803.19

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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.