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Finding the Fourth Proportional to 18,293.66, 27,439.85 and 7,756.89

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Solution

The fourth proportional to 18,293.66, 27,439.85 and 7,756.89 is: 11,635.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,293.66 : 27,439.85 = 7,756.89 : x
  2. Step 2: Convert to fraction form
    18,293.66/27,439.85 = 7,756.89/x
  3. Step 3: Cross multiply
    18,293.66x = 27,439.85 × 7,756.89
  4. Step 4: Simplify right side
    18,293.66x = 212,847,917.46
  5. Step 5: Solve for x
    x = 212,847,917.46/18,293.66
  6. Step 6: Final answer
    x = 11,635.07

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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.