Home / 25,660.28-35,427.12-19,680.44

Finding the Fourth Proportional to 25,660.28, 35,427.12 and 19,680.44

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Solution

The fourth proportional to 25,660.28, 35,427.12 and 19,680.44 is: 27,171.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,660.28 : 35,427.12 = 19,680.44 : x
  2. Step 2: Convert to fraction form
    25,660.28/35,427.12 = 19,680.44/x
  3. Step 3: Cross multiply
    25,660.28x = 35,427.12 × 19,680.44
  4. Step 4: Simplify right side
    25,660.28x = 697,221,309.53
  5. Step 5: Solve for x
    x = 697,221,309.53/25,660.28
  6. Step 6: Final answer
    x = 27,171.23

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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.