Home / 21,161.55-31,765.41-15,597.66

Finding the Fourth Proportional to 21,161.55, 31,765.41 and 15,597.66

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Solution

The fourth proportional to 21,161.55, 31,765.41 and 15,597.66 is: 23,413.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,161.55 : 31,765.41 = 15,597.66 : x
  2. Step 2: Convert to fraction form
    21,161.55/31,765.41 = 15,597.66/x
  3. Step 3: Cross multiply
    21,161.55x = 31,765.41 × 15,597.66
  4. Step 4: Simplify right side
    21,161.55x = 495,466,064.94
  5. Step 5: Solve for x
    x = 495,466,064.94/21,161.55
  6. Step 6: Final answer
    x = 23,413.51

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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.