Home / 22,209.35-30,647.99-12,138.12

Finding the Fourth Proportional to 22,209.35, 30,647.99 and 12,138.12

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Solution

The fourth proportional to 22,209.35, 30,647.99 and 12,138.12 is: 16,750.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,209.35 : 30,647.99 = 12,138.12 : x
  2. Step 2: Convert to fraction form
    22,209.35/30,647.99 = 12,138.12/x
  3. Step 3: Cross multiply
    22,209.35x = 30,647.99 × 12,138.12
  4. Step 4: Simplify right side
    22,209.35x = 372,009,010.72
  5. Step 5: Solve for x
    x = 372,009,010.72/22,209.35
  6. Step 6: Final answer
    x = 16,750.11

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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.