Home / 22,020.40-30,388.16-11,948.80

Finding the Fourth Proportional to 22,020.40, 30,388.16 and 11,948.80

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Solution

The fourth proportional to 22,020.40, 30,388.16 and 11,948.80 is: 16,489.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,020.40 : 30,388.16 = 11,948.80 : x
  2. Step 2: Convert to fraction form
    22,020.40/30,388.16 = 11,948.80/x
  3. Step 3: Cross multiply
    22,020.40x = 30,388.16 × 11,948.80
  4. Step 4: Simplify right side
    22,020.40x = 363,102,046.21
  5. Step 5: Solve for x
    x = 363,102,046.21/22,020.40
  6. Step 6: Final answer
    x = 16,489.35

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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.