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Finding the Fourth Proportional to 15,107.65, 20,848.08 and 8,301.65

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Solution

The fourth proportional to 15,107.65, 20,848.08 and 8,301.65 is: 11,456.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,107.65 : 20,848.08 = 8,301.65 : x
  2. Step 2: Convert to fraction form
    15,107.65/20,848.08 = 8,301.65/x
  3. Step 3: Cross multiply
    15,107.65x = 20,848.08 × 8,301.65
  4. Step 4: Simplify right side
    15,107.65x = 173,073,463.33
  5. Step 5: Solve for x
    x = 173,073,463.33/15,107.65
  6. Step 6: Final answer
    x = 11,456.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.