Home / 22,381.16-30,869.22-21,388.52

Finding the Fourth Proportional to 22,381.16, 30,869.22 and 21,388.52

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Solution

The fourth proportional to 22,381.16, 30,869.22 and 21,388.52 is: 29,500.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,381.16 : 30,869.22 = 21,388.52 : x
  2. Step 2: Convert to fraction form
    22,381.16/30,869.22 = 21,388.52/x
  3. Step 3: Cross multiply
    22,381.16x = 30,869.22 × 21,388.52
  4. Step 4: Simplify right side
    22,381.16x = 660,246,929.35
  5. Step 5: Solve for x
    x = 660,246,929.35/22,381.16
  6. Step 6: Final answer
    x = 29,500.12

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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.