Home / 11,146.28-15,381.29-6,109.61

Finding the Fourth Proportional to 11,146.28, 15,381.29 and 6,109.61

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Solution

The fourth proportional to 11,146.28, 15,381.29 and 6,109.61 is: 8,430.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,146.28 : 15,381.29 = 6,109.61 : x
  2. Step 2: Convert to fraction form
    11,146.28/15,381.29 = 6,109.61/x
  3. Step 3: Cross multiply
    11,146.28x = 15,381.29 × 6,109.61
  4. Step 4: Simplify right side
    11,146.28x = 93,973,575.74
  5. Step 5: Solve for x
    x = 93,973,575.74/11,146.28
  6. Step 6: Final answer
    x = 8,430.94

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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.