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Finding the Fourth Proportional to 18,277.81, 27,417.12 and 5,129.89

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Solution

The fourth proportional to 18,277.81, 27,417.12 and 5,129.89 is: 7,694.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,277.81 : 27,417.12 = 5,129.89 : x
  2. Step 2: Convert to fraction form
    18,277.81/27,417.12 = 5,129.89/x
  3. Step 3: Cross multiply
    18,277.81x = 27,417.12 × 5,129.89
  4. Step 4: Simplify right side
    18,277.81x = 140,646,809.72
  5. Step 5: Solve for x
    x = 140,646,809.72/18,277.81
  6. Step 6: Final answer
    x = 7,694.95

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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.