Home / 11,279.67-15,565.81-6,243.90

Finding the Fourth Proportional to 11,279.67, 15,565.81 and 6,243.90

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Solution

The fourth proportional to 11,279.67, 15,565.81 and 6,243.90 is: 8,616.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,279.67 : 15,565.81 = 6,243.90 : x
  2. Step 2: Convert to fraction form
    11,279.67/15,565.81 = 6,243.90/x
  3. Step 3: Cross multiply
    11,279.67x = 15,565.81 × 6,243.90
  4. Step 4: Simplify right side
    11,279.67x = 97,191,361.06
  5. Step 5: Solve for x
    x = 97,191,361.06/11,279.67
  6. Step 6: Final answer
    x = 8,616.51

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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.