Home / 28,268.96-42,407.76-9,287.63

Finding the Fourth Proportional to 28,268.96, 42,407.76 and 9,287.63

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Solution

The fourth proportional to 28,268.96, 42,407.76 and 9,287.63 is: 13,932.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,268.96 : 42,407.76 = 9,287.63 : x
  2. Step 2: Convert to fraction form
    28,268.96/42,407.76 = 9,287.63/x
  3. Step 3: Cross multiply
    28,268.96x = 42,407.76 × 9,287.63
  4. Step 4: Simplify right side
    28,268.96x = 393,867,371.97
  5. Step 5: Solve for x
    x = 393,867,371.97/28,268.96
  6. Step 6: Final answer
    x = 13,932.86

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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.