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Finding the Fourth Proportional to 15,097.41, 20,839.55 and 8,815.05

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Solution

The fourth proportional to 15,097.41, 20,839.55 and 8,815.05 is: 12,167.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,097.41 : 20,839.55 = 8,815.05 : x
  2. Step 2: Convert to fraction form
    15,097.41/20,839.55 = 8,815.05/x
  3. Step 3: Cross multiply
    15,097.41x = 20,839.55 × 8,815.05
  4. Step 4: Simplify right side
    15,097.41x = 183,701,631.15
  5. Step 5: Solve for x
    x = 183,701,631.15/15,097.41
  6. Step 6: Final answer
    x = 12,167.76

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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.