Home / 10,521.09-15,770.66-4,278.60

Finding the Fourth Proportional to 10,521.09, 15,770.66 and 4,278.60

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Solution

The fourth proportional to 10,521.09, 15,770.66 and 4,278.60 is: 6,413.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,521.09 : 15,770.66 = 4,278.60 : x
  2. Step 2: Convert to fraction form
    10,521.09/15,770.66 = 4,278.60/x
  3. Step 3: Cross multiply
    10,521.09x = 15,770.66 × 4,278.60
  4. Step 4: Simplify right side
    10,521.09x = 67,476,324.48
  5. Step 5: Solve for x
    x = 67,476,324.48/10,521.09
  6. Step 6: Final answer
    x = 6,413.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.