Home / 20,383.32-30,531.78-15,398.04

Finding the Fourth Proportional to 20,383.32, 30,531.78 and 15,398.04

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Solution

The fourth proportional to 20,383.32, 30,531.78 and 15,398.04 is: 23,064.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,383.32 : 30,531.78 = 15,398.04 : x
  2. Step 2: Convert to fraction form
    20,383.32/30,531.78 = 15,398.04/x
  3. Step 3: Cross multiply
    20,383.32x = 30,531.78 × 15,398.04
  4. Step 4: Simplify right side
    20,383.32x = 470,129,569.71
  5. Step 5: Solve for x
    x = 470,129,569.71/20,383.32
  6. Step 6: Final answer
    x = 23,064.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.