Home / 20,449.60-30,667.20-7,302.40

Finding the Fourth Proportional to 20,449.60, 30,667.20 and 7,302.40

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Solution

The fourth proportional to 20,449.60, 30,667.20 and 7,302.40 is: 10,951.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,449.60 : 30,667.20 = 7,302.40 : x
  2. Step 2: Convert to fraction form
    20,449.60/30,667.20 = 7,302.40/x
  3. Step 3: Cross multiply
    20,449.60x = 30,667.20 × 7,302.40
  4. Step 4: Simplify right side
    20,449.60x = 223,944,161.28
  5. Step 5: Solve for x
    x = 223,944,161.28/20,449.60
  6. Step 6: Final answer
    x = 10,951.03

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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.