Home / 42,268.80-63,398.40-11,107.20

Finding the Fourth Proportional to 42,268.80, 63,398.40 and 11,107.20

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Solution

The fourth proportional to 42,268.80, 63,398.40 and 11,107.20 is: 16,659.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,268.80 : 63,398.40 = 11,107.20 : x
  2. Step 2: Convert to fraction form
    42,268.80/63,398.40 = 11,107.20/x
  3. Step 3: Cross multiply
    42,268.80x = 63,398.40 × 11,107.20
  4. Step 4: Simplify right side
    42,268.80x = 704,178,708.48
  5. Step 5: Solve for x
    x = 704,178,708.48/42,268.80
  6. Step 6: Final answer
    x = 16,659.54

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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.