Home / 18,727.04-25,856.31-15,157.88

Finding the Fourth Proportional to 18,727.04, 25,856.31 and 15,157.88

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Solution

The fourth proportional to 18,727.04, 25,856.31 and 15,157.88 is: 20,928.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,727.04 : 25,856.31 = 15,157.88 : x
  2. Step 2: Convert to fraction form
    18,727.04/25,856.31 = 15,157.88/x
  3. Step 3: Cross multiply
    18,727.04x = 25,856.31 × 15,157.88
  4. Step 4: Simplify right side
    18,727.04x = 391,926,844.22
  5. Step 5: Solve for x
    x = 391,926,844.22/18,727.04
  6. Step 6: Final answer
    x = 20,928.39

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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.