Home / 25,728.42-35,505.88-15,118.62

Finding the Fourth Proportional to 25,728.42, 35,505.88 and 15,118.62

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Solution

The fourth proportional to 25,728.42, 35,505.88 and 15,118.62 is: 20,864.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,728.42 : 35,505.88 = 15,118.62 : x
  2. Step 2: Convert to fraction form
    25,728.42/35,505.88 = 15,118.62/x
  3. Step 3: Cross multiply
    25,728.42x = 35,505.88 × 15,118.62
  4. Step 4: Simplify right side
    25,728.42x = 536,799,907.49
  5. Step 5: Solve for x
    x = 536,799,907.49/25,728.42
  6. Step 6: Final answer
    x = 20,864.08

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Half scale
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Double scale
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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.