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Finding the Fourth Proportional to 18,260.76, 27,401.85 and 7,730.13

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Solution

The fourth proportional to 18,260.76, 27,401.85 and 7,730.13 is: 11,599.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,260.76 : 27,401.85 = 7,730.13 : x
  2. Step 2: Convert to fraction form
    18,260.76/27,401.85 = 7,730.13/x
  3. Step 3: Cross multiply
    18,260.76x = 27,401.85 × 7,730.13
  4. Step 4: Simplify right side
    18,260.76x = 211,819,862.74
  5. Step 5: Solve for x
    x = 211,819,862.74/18,260.76
  6. Step 6: Final answer
    x = 11,599.73

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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.