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Finding the Fourth Proportional to 18,345.98, 27,518.49 and 5,866.71

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Solution

The fourth proportional to 18,345.98, 27,518.49 and 5,866.71 is: 8,799.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.98 : 27,518.49 = 5,866.71 : x
  2. Step 2: Convert to fraction form
    18,345.98/27,518.49 = 5,866.71/x
  3. Step 3: Cross multiply
    18,345.98x = 27,518.49 × 5,866.71
  4. Step 4: Simplify right side
    18,345.98x = 161,443,000.47
  5. Step 5: Solve for x
    x = 161,443,000.47/18,345.98
  6. Step 6: Final answer
    x = 8,799.91

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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.