Home / 11,202.90-15,479.70-8,381.70

Finding the Fourth Proportional to 11,202.90, 15,479.70 and 8,381.70

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Solution

The fourth proportional to 11,202.90, 15,479.70 and 8,381.70 is: 11,581.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,202.90 : 15,479.70 = 8,381.70 : x
  2. Step 2: Convert to fraction form
    11,202.90/15,479.70 = 8,381.70/x
  3. Step 3: Cross multiply
    11,202.90x = 15,479.70 × 8,381.70
  4. Step 4: Simplify right side
    11,202.90x = 129,746,201.49
  5. Step 5: Solve for x
    x = 129,746,201.49/11,202.90
  6. Step 6: Final answer
    x = 11,581.48

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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.