Home / 11,138.13-15,370.61-6,170.13

Finding the Fourth Proportional to 11,138.13, 15,370.61 and 6,170.13

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Solution

The fourth proportional to 11,138.13, 15,370.61 and 6,170.13 is: 8,514.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,138.13 : 15,370.61 = 6,170.13 : x
  2. Step 2: Convert to fraction form
    11,138.13/15,370.61 = 6,170.13/x
  3. Step 3: Cross multiply
    11,138.13x = 15,370.61 × 6,170.13
  4. Step 4: Simplify right side
    11,138.13x = 94,838,600.45
  5. Step 5: Solve for x
    x = 94,838,600.45/11,138.13
  6. Step 6: Final answer
    x = 8,514.77

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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.