Home / 25,815.60-38,723.40-20,631.60

Finding the Fourth Proportional to 25,815.60, 38,723.40 and 20,631.60

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Solution

The fourth proportional to 25,815.60, 38,723.40 and 20,631.60 is: 30,947.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,815.60 : 38,723.40 = 20,631.60 : x
  2. Step 2: Convert to fraction form
    25,815.60/38,723.40 = 20,631.60/x
  3. Step 3: Cross multiply
    25,815.60x = 38,723.40 × 20,631.60
  4. Step 4: Simplify right side
    25,815.60x = 798,925,699.44
  5. Step 5: Solve for x
    x = 798,925,699.44/25,815.60
  6. Step 6: Final answer
    x = 30,947.40

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.