Home / 36,181.60-54,272.40-21,407.20

Finding the Fourth Proportional to 36,181.60, 54,272.40 and 21,407.20

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Solution

The fourth proportional to 36,181.60, 54,272.40 and 21,407.20 is: 32,110.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,181.60 : 54,272.40 = 21,407.20 : x
  2. Step 2: Convert to fraction form
    36,181.60/54,272.40 = 21,407.20/x
  3. Step 3: Cross multiply
    36,181.60x = 54,272.40 × 21,407.20
  4. Step 4: Simplify right side
    36,181.60x = 1,161,820,121.28
  5. Step 5: Solve for x
    x = 1,161,820,121.28/36,181.60
  6. Step 6: Final answer
    x = 32,110.80

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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.