Home / 22,456.44-30,990.20-12,386.12

Finding the Fourth Proportional to 22,456.44, 30,990.20 and 12,386.12

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Solution

The fourth proportional to 22,456.44, 30,990.20 and 12,386.12 is: 17,093.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,456.44 : 30,990.20 = 12,386.12 : x
  2. Step 2: Convert to fraction form
    22,456.44/30,990.20 = 12,386.12/x
  3. Step 3: Cross multiply
    22,456.44x = 30,990.20 × 12,386.12
  4. Step 4: Simplify right side
    22,456.44x = 383,848,119.14
  5. Step 5: Solve for x
    x = 383,848,119.14/22,456.44
  6. Step 6: Final answer
    x = 17,093.01

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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.