Home / 25,456.15-35,142.75-19,778.11

Finding the Fourth Proportional to 25,456.15, 35,142.75 and 19,778.11

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Solution

The fourth proportional to 25,456.15, 35,142.75 and 19,778.11 is: 27,304.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,456.15 : 35,142.75 = 19,778.11 : x
  2. Step 2: Convert to fraction form
    25,456.15/35,142.75 = 19,778.11/x
  3. Step 3: Cross multiply
    25,456.15x = 35,142.75 × 19,778.11
  4. Step 4: Simplify right side
    25,456.15x = 695,057,175.20
  5. Step 5: Solve for x
    x = 695,057,175.20/25,456.15
  6. Step 6: Final answer
    x = 27,304.10

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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.