Home / 11,820.61-17,730.97-3,500.79

Finding the Fourth Proportional to 11,820.61, 17,730.97 and 3,500.79

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Solution

The fourth proportional to 11,820.61, 17,730.97 and 3,500.79 is: 5,251.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,820.61 : 17,730.97 = 3,500.79 : x
  2. Step 2: Convert to fraction form
    11,820.61/17,730.97 = 3,500.79/x
  3. Step 3: Cross multiply
    11,820.61x = 17,730.97 × 3,500.79
  4. Step 4: Simplify right side
    11,820.61x = 62,072,402.47
  5. Step 5: Solve for x
    x = 62,072,402.47/11,820.61
  6. Step 6: Final answer
    x = 5,251.20

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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.