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Finding the Fourth Proportional to 18,100.52, 27,143.25 and 7,000.81

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Solution

The fourth proportional to 18,100.52, 27,143.25 and 7,000.81 is: 10,498.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,100.52 : 27,143.25 = 7,000.81 : x
  2. Step 2: Convert to fraction form
    18,100.52/27,143.25 = 7,000.81/x
  3. Step 3: Cross multiply
    18,100.52x = 27,143.25 × 7,000.81
  4. Step 4: Simplify right side
    18,100.52x = 190,024,641.92
  5. Step 5: Solve for x
    x = 190,024,641.92/18,100.52
  6. Step 6: Final answer
    x = 10,498.30

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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.