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Finding the Fourth Proportional to 11,409.57, 15,745.05 and 6,373.89

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Solution

The fourth proportional to 11,409.57, 15,745.05 and 6,373.89 is: 8,795.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,409.57 : 15,745.05 = 6,373.89 : x
  2. Step 2: Convert to fraction form
    11,409.57/15,745.05 = 6,373.89/x
  3. Step 3: Cross multiply
    11,409.57x = 15,745.05 × 6,373.89
  4. Step 4: Simplify right side
    11,409.57x = 100,357,216.74
  5. Step 5: Solve for x
    x = 100,357,216.74/11,409.57
  6. Step 6: Final answer
    x = 8,795.88

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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.