Home / 40,111.75-55,354.01-21,714.80

Finding the Fourth Proportional to 40,111.75, 55,354.01 and 21,714.80

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Solution

The fourth proportional to 40,111.75, 55,354.01 and 21,714.80 is: 29,966.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,111.75 : 55,354.01 = 21,714.80 : x
  2. Step 2: Convert to fraction form
    40,111.75/55,354.01 = 21,714.80/x
  3. Step 3: Cross multiply
    40,111.75x = 55,354.01 × 21,714.80
  4. Step 4: Simplify right side
    40,111.75x = 1,202,001,449.02
  5. Step 5: Solve for x
    x = 1,202,001,449.02/40,111.75
  6. Step 6: Final answer
    x = 29,966.32

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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.