Home / 20,412.70-30,631.32-8,725.92

Finding the Fourth Proportional to 20,412.70, 30,631.32 and 8,725.92

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Solution

The fourth proportional to 20,412.70, 30,631.32 and 8,725.92 is: 13,094.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412.70 : 30,631.32 = 8,725.92 : x
  2. Step 2: Convert to fraction form
    20,412.70/30,631.32 = 8,725.92/x
  3. Step 3: Cross multiply
    20,412.70x = 30,631.32 × 8,725.92
  4. Step 4: Simplify right side
    20,412.70x = 267,286,447.81
  5. Step 5: Solve for x
    x = 267,286,447.81/20,412.70
  6. Step 6: Final answer
    x = 13,094.13

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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.