Home / 13,207.76-18,223.08-8,169.56

Finding the Fourth Proportional to 13,207.76, 18,223.08 and 8,169.56

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Solution

The fourth proportional to 13,207.76, 18,223.08 and 8,169.56 is: 11,271.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207.76 : 18,223.08 = 8,169.56 : x
  2. Step 2: Convert to fraction form
    13,207.76/18,223.08 = 8,169.56/x
  3. Step 3: Cross multiply
    13,207.76x = 18,223.08 × 8,169.56
  4. Step 4: Simplify right side
    13,207.76x = 148,874,545.44
  5. Step 5: Solve for x
    x = 148,874,545.44/13,207.76
  6. Step 6: Final answer
    x = 11,271.75

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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.