Home / 11,538.72-15,923.90-6,503.15

Finding the Fourth Proportional to 11,538.72, 15,923.90 and 6,503.15

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Solution

The fourth proportional to 11,538.72, 15,923.90 and 6,503.15 is: 8,974.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,538.72 : 15,923.90 = 6,503.15 : x
  2. Step 2: Convert to fraction form
    11,538.72/15,923.90 = 6,503.15/x
  3. Step 3: Cross multiply
    11,538.72x = 15,923.90 × 6,503.15
  4. Step 4: Simplify right side
    11,538.72x = 103,555,470.06
  5. Step 5: Solve for x
    x = 103,555,470.06/11,538.72
  6. Step 6: Final answer
    x = 8,974.61

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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.