Home / 20,191.10-30,286.65-10,349.60

Finding the Fourth Proportional to 20,191.10, 30,286.65 and 10,349.60

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Solution

The fourth proportional to 20,191.10, 30,286.65 and 10,349.60 is: 15,524.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,191.10 : 30,286.65 = 10,349.60 : x
  2. Step 2: Convert to fraction form
    20,191.10/30,286.65 = 10,349.60/x
  3. Step 3: Cross multiply
    20,191.10x = 30,286.65 × 10,349.60
  4. Step 4: Simplify right side
    20,191.10x = 313,454,712.84
  5. Step 5: Solve for x
    x = 313,454,712.84/20,191.10
  6. Step 6: Final answer
    x = 15,524.40

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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.