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Finding the Fourth Proportional to 18,345.69, 27,522.72 and 6,658.91

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Solution

The fourth proportional to 18,345.69, 27,522.72 and 6,658.91 is: 9,989.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,345.69 : 27,522.72 = 6,658.91 : x
  2. Step 2: Convert to fraction form
    18,345.69/27,522.72 = 6,658.91/x
  3. Step 3: Cross multiply
    18,345.69x = 27,522.72 × 6,658.91
  4. Step 4: Simplify right side
    18,345.69x = 183,271,177.82
  5. Step 5: Solve for x
    x = 183,271,177.82/18,345.69
  6. Step 6: Final answer
    x = 9,989.88

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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.