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Finding the Fourth Proportional to 15,117.78, 22,668.89 and 6,790.65

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Solution

The fourth proportional to 15,117.78, 22,668.89 and 6,790.65 is: 10,182.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,117.78 : 22,668.89 = 6,790.65 : x
  2. Step 2: Convert to fraction form
    15,117.78/22,668.89 = 6,790.65/x
  3. Step 3: Cross multiply
    15,117.78x = 22,668.89 × 6,790.65
  4. Step 4: Simplify right side
    15,117.78x = 153,936,350.58
  5. Step 5: Solve for x
    x = 153,936,350.58/15,117.78
  6. Step 6: Final answer
    x = 10,182.47

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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.