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Finding the Fourth Proportional to 18,274.68, 27,424.98 and 7,880.76

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Solution

The fourth proportional to 18,274.68, 27,424.98 and 7,880.76 is: 11,826.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,274.68 : 27,424.98 = 7,880.76 : x
  2. Step 2: Convert to fraction form
    18,274.68/27,424.98 = 7,880.76/x
  3. Step 3: Cross multiply
    18,274.68x = 27,424.98 × 7,880.76
  4. Step 4: Simplify right side
    18,274.68x = 216,129,685.38
  5. Step 5: Solve for x
    x = 216,129,685.38/18,274.68
  6. Step 6: Final answer
    x = 11,826.73

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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.