Home / 11,146.14-15,381.66-6,430.42

Finding the Fourth Proportional to 11,146.14, 15,381.66 and 6,430.42

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Solution

The fourth proportional to 11,146.14, 15,381.66 and 6,430.42 is: 8,873.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,146.14 : 15,381.66 = 6,430.42 : x
  2. Step 2: Convert to fraction form
    11,146.14/15,381.66 = 6,430.42/x
  3. Step 3: Cross multiply
    11,146.14x = 15,381.66 × 6,430.42
  4. Step 4: Simplify right side
    11,146.14x = 98,910,534.10
  5. Step 5: Solve for x
    x = 98,910,534.10/11,146.14
  6. Step 6: Final answer
    x = 8,873.97

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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.