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Finding the Fourth Proportional to 18,616.29, 27,925.79 and 6,929.50

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Solution

The fourth proportional to 18,616.29, 27,925.79 and 6,929.50 is: 10,394.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,616.29 : 27,925.79 = 6,929.50 : x
  2. Step 2: Convert to fraction form
    18,616.29/27,925.79 = 6,929.50/x
  3. Step 3: Cross multiply
    18,616.29x = 27,925.79 × 6,929.50
  4. Step 4: Simplify right side
    18,616.29x = 193,511,761.81
  5. Step 5: Solve for x
    x = 193,511,761.81/18,616.29
  6. Step 6: Final answer
    x = 10,394.75

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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.