Home / 22,517.91-31,041.77-15,783.21

Finding the Fourth Proportional to 22,517.91, 31,041.77 and 15,783.21

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Solution

The fourth proportional to 22,517.91, 31,041.77 and 15,783.21 is: 21,757.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,517.91 : 31,041.77 = 15,783.21 : x
  2. Step 2: Convert to fraction form
    22,517.91/31,041.77 = 15,783.21/x
  3. Step 3: Cross multiply
    22,517.91x = 31,041.77 × 15,783.21
  4. Step 4: Simplify right side
    22,517.91x = 489,938,695.77
  5. Step 5: Solve for x
    x = 489,938,695.77/22,517.91
  6. Step 6: Final answer
    x = 21,757.73

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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.