Home / 25,851.87-35,710.77-20,257.38

Finding the Fourth Proportional to 25,851.87, 35,710.77 and 20,257.38

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Solution

The fourth proportional to 25,851.87, 35,710.77 and 20,257.38 is: 27,982.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,851.87 : 35,710.77 = 20,257.38 : x
  2. Step 2: Convert to fraction form
    25,851.87/35,710.77 = 20,257.38/x
  3. Step 3: Cross multiply
    25,851.87x = 35,710.77 × 20,257.38
  4. Step 4: Simplify right side
    25,851.87x = 723,406,637.98
  5. Step 5: Solve for x
    x = 723,406,637.98/25,851.87
  6. Step 6: Final answer
    x = 27,982.76

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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.