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Finding the Fourth Proportional to 15,074.61, 20,792.11 and 9,964.19

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Solution

The fourth proportional to 15,074.61, 20,792.11 and 9,964.19 is: 13,743.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,074.61 : 20,792.11 = 9,964.19 : x
  2. Step 2: Convert to fraction form
    15,074.61/20,792.11 = 9,964.19/x
  3. Step 3: Cross multiply
    15,074.61x = 20,792.11 × 9,964.19
  4. Step 4: Simplify right side
    15,074.61x = 207,176,479.78
  5. Step 5: Solve for x
    x = 207,176,479.78/15,074.61
  6. Step 6: Final answer
    x = 13,743.41

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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.