Home / 13,148.11-18,144.36-8,432.38

Finding the Fourth Proportional to 13,148.11, 18,144.36 and 8,432.38

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Solution

The fourth proportional to 13,148.11, 18,144.36 and 8,432.38 is: 11,636.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,148.11 : 18,144.36 = 8,432.38 : x
  2. Step 2: Convert to fraction form
    13,148.11/18,144.36 = 8,432.38/x
  3. Step 3: Cross multiply
    13,148.11x = 18,144.36 × 8,432.38
  4. Step 4: Simplify right side
    13,148.11x = 153,000,047.66
  5. Step 5: Solve for x
    x = 153,000,047.66/13,148.11
  6. Step 6: Final answer
    x = 11,636.66

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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.