Home / 11,529.42-15,905.07-7,548.78

Finding the Fourth Proportional to 11,529.42, 15,905.07 and 7,548.78

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Solution

The fourth proportional to 11,529.42, 15,905.07 and 7,548.78 is: 10,413.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,529.42 : 15,905.07 = 7,548.78 : x
  2. Step 2: Convert to fraction form
    11,529.42/15,905.07 = 7,548.78/x
  3. Step 3: Cross multiply
    11,529.42x = 15,905.07 × 7,548.78
  4. Step 4: Simplify right side
    11,529.42x = 120,063,874.31
  5. Step 5: Solve for x
    x = 120,063,874.31/11,529.42
  6. Step 6: Final answer
    x = 10,413.70

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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.