Home / 28,266.12-38,959.96-21,458.04

Finding the Fourth Proportional to 28,266.12, 38,959.96 and 21,458.04

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Solution

The fourth proportional to 28,266.12, 38,959.96 and 21,458.04 is: 29,576.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,266.12 : 38,959.96 = 21,458.04 : x
  2. Step 2: Convert to fraction form
    28,266.12/38,959.96 = 21,458.04/x
  3. Step 3: Cross multiply
    28,266.12x = 38,959.96 × 21,458.04
  4. Step 4: Simplify right side
    28,266.12x = 836,004,380.08
  5. Step 5: Solve for x
    x = 836,004,380.08/28,266.12
  6. Step 6: Final answer
    x = 29,576.20

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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.