Home / 22,347.45-30,839.40-12,138.42

Finding the Fourth Proportional to 22,347.45, 30,839.40 and 12,138.42

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Solution

The fourth proportional to 22,347.45, 30,839.40 and 12,138.42 is: 16,750.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,347.45 : 30,839.40 = 12,138.42 : x
  2. Step 2: Convert to fraction form
    22,347.45/30,839.40 = 12,138.42/x
  3. Step 3: Cross multiply
    22,347.45x = 30,839.40 × 12,138.42
  4. Step 4: Simplify right side
    22,347.45x = 374,341,589.75
  5. Step 5: Solve for x
    x = 374,341,589.75/22,347.45
  6. Step 6: Final answer
    x = 16,750.98

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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.