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Finding the Fourth Proportional to 18,342.72, 27,515.91 and 6,656.85

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Solution

The fourth proportional to 18,342.72, 27,515.91 and 6,656.85 is: 9,985.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,342.72 : 27,515.91 = 6,656.85 : x
  2. Step 2: Convert to fraction form
    18,342.72/27,515.91 = 6,656.85/x
  3. Step 3: Cross multiply
    18,342.72x = 27,515.91 × 6,656.85
  4. Step 4: Simplify right side
    18,342.72x = 183,169,285.48
  5. Step 5: Solve for x
    x = 183,169,285.48/18,342.72
  6. Step 6: Final answer
    x = 9,985.94

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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.