Home / 22,378.44-30,885.39-12,821.25

Finding the Fourth Proportional to 22,378.44, 30,885.39 and 12,821.25

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Solution

The fourth proportional to 22,378.44, 30,885.39 and 12,821.25 is: 17,695.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,378.44 : 30,885.39 = 12,821.25 : x
  2. Step 2: Convert to fraction form
    22,378.44/30,885.39 = 12,821.25/x
  3. Step 3: Cross multiply
    22,378.44x = 30,885.39 × 12,821.25
  4. Step 4: Simplify right side
    22,378.44x = 395,989,306.54
  5. Step 5: Solve for x
    x = 395,989,306.54/22,378.44
  6. Step 6: Final answer
    x = 17,695.13

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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.