Home / 22,780.45-31,420.05-16,728.80

Finding the Fourth Proportional to 22,780.45, 31,420.05 and 16,728.80

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Solution

The fourth proportional to 22,780.45, 31,420.05 and 16,728.80 is: 23,073.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,780.45 : 31,420.05 = 16,728.80 : x
  2. Step 2: Convert to fraction form
    22,780.45/31,420.05 = 16,728.80/x
  3. Step 3: Cross multiply
    22,780.45x = 31,420.05 × 16,728.80
  4. Step 4: Simplify right side
    22,780.45x = 525,619,512.61
  5. Step 5: Solve for x
    x = 525,619,512.61/22,780.45
  6. Step 6: Final answer
    x = 23,073.27

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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.