Home / 25,687.28-35,398.68-18,222.32

Finding the Fourth Proportional to 25,687.28, 35,398.68 and 18,222.32

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Solution

The fourth proportional to 25,687.28, 35,398.68 and 18,222.32 is: 25,111.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,687.28 : 35,398.68 = 18,222.32 : x
  2. Step 2: Convert to fraction form
    25,687.28/35,398.68 = 18,222.32/x
  3. Step 3: Cross multiply
    25,687.28x = 35,398.68 × 18,222.32
  4. Step 4: Simplify right side
    25,687.28x = 645,046,074.54
  5. Step 5: Solve for x
    x = 645,046,074.54/25,687.28
  6. Step 6: Final answer
    x = 25,111.50

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Half scale
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Double scale
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Similar ratio
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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.