Home / 28,114.20-38,796.96-15,538.92

Finding the Fourth Proportional to 28,114.20, 38,796.96 and 15,538.92

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Solution

The fourth proportional to 28,114.20, 38,796.96 and 15,538.92 is: 21,443.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,114.20 : 38,796.96 = 15,538.92 : x
  2. Step 2: Convert to fraction form
    28,114.20/38,796.96 = 15,538.92/x
  3. Step 3: Cross multiply
    28,114.20x = 38,796.96 × 15,538.92
  4. Step 4: Simplify right side
    28,114.20x = 602,862,857.68
  5. Step 5: Solve for x
    x = 602,862,857.68/28,114.20
  6. Step 6: Final answer
    x = 21,443.36

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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.