Home / 11,332.80-15,609.90-7,923.78

Finding the Fourth Proportional to 11,332.80, 15,609.90 and 7,923.78

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Solution

The fourth proportional to 11,332.80, 15,609.90 and 7,923.78 is: 10,914.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,332.80 : 15,609.90 = 7,923.78 : x
  2. Step 2: Convert to fraction form
    11,332.80/15,609.90 = 7,923.78/x
  3. Step 3: Cross multiply
    11,332.80x = 15,609.90 × 7,923.78
  4. Step 4: Simplify right side
    11,332.80x = 123,689,413.42
  5. Step 5: Solve for x
    x = 123,689,413.42/11,332.80
  6. Step 6: Final answer
    x = 10,914.29

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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.