Home / 13,379.23-18,444.11-9,387.97

Finding the Fourth Proportional to 13,379.23, 18,444.11 and 9,387.97

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Solution

The fourth proportional to 13,379.23, 18,444.11 and 9,387.97 is: 12,941.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,379.23 : 18,444.11 = 9,387.97 : x
  2. Step 2: Convert to fraction form
    13,379.23/18,444.11 = 9,387.97/x
  3. Step 3: Cross multiply
    13,379.23x = 18,444.11 × 9,387.97
  4. Step 4: Simplify right side
    13,379.23x = 173,152,704.42
  5. Step 5: Solve for x
    x = 173,152,704.42/13,379.23
  6. Step 6: Final answer
    x = 12,941.90

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1.5x scale

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.