Home / 20,402.11-30,584.69-7,251.40

Finding the Fourth Proportional to 20,402.11, 30,584.69 and 7,251.40

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Solution

The fourth proportional to 20,402.11, 30,584.69 and 7,251.40 is: 10,870.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,402.11 : 30,584.69 = 7,251.40 : x
  2. Step 2: Convert to fraction form
    20,402.11/30,584.69 = 7,251.40/x
  3. Step 3: Cross multiply
    20,402.11x = 30,584.69 × 7,251.40
  4. Step 4: Simplify right side
    20,402.11x = 221,781,877.43
  5. Step 5: Solve for x
    x = 221,781,877.43/20,402.11
  6. Step 6: Final answer
    x = 10,870.54

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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.