Home / 13,265.40-19,891.25-3,904.20

Finding the Fourth Proportional to 13,265.40, 19,891.25 and 3,904.20

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Solution

The fourth proportional to 13,265.40, 19,891.25 and 3,904.20 is: 5,854.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,265.40 : 19,891.25 = 3,904.20 : x
  2. Step 2: Convert to fraction form
    13,265.40/19,891.25 = 3,904.20/x
  3. Step 3: Cross multiply
    13,265.40x = 19,891.25 × 3,904.20
  4. Step 4: Simplify right side
    13,265.40x = 77,659,398.73
  5. Step 5: Solve for x
    x = 77,659,398.73/13,265.40
  6. Step 6: Final answer
    x = 5,854.28

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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.