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Finding the Fourth Proportional to 18,478.16, 27,699.96 and 6,788.24

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Solution

The fourth proportional to 18,478.16, 27,699.96 and 6,788.24 is: 10,176.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,478.16 : 27,699.96 = 6,788.24 : x
  2. Step 2: Convert to fraction form
    18,478.16/27,699.96 = 6,788.24/x
  3. Step 3: Cross multiply
    18,478.16x = 27,699.96 × 6,788.24
  4. Step 4: Simplify right side
    18,478.16x = 188,033,976.47
  5. Step 5: Solve for x
    x = 188,033,976.47/18,478.16
  6. Step 6: Final answer
    x = 10,176.01

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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.