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Finding the Fourth Proportional to 18,149.59, 27,184.69 and 12,868.59

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Solution

The fourth proportional to 18,149.59, 27,184.69 and 12,868.59 is: 19,274.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,149.59 : 27,184.69 = 12,868.59 : x
  2. Step 2: Convert to fraction form
    18,149.59/27,184.69 = 12,868.59/x
  3. Step 3: Cross multiply
    18,149.59x = 27,184.69 × 12,868.59
  4. Step 4: Simplify right side
    18,149.59x = 349,828,629.89
  5. Step 5: Solve for x
    x = 349,828,629.89/18,149.59
  6. Step 6: Final answer
    x = 19,274.74

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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.