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Finding the Fourth Proportional to 14,851.62, 20,494.68 and 8,478.54

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Solution

The fourth proportional to 14,851.62, 20,494.68 and 8,478.54 is: 11,700.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,851.62 : 20,494.68 = 8,478.54 : x
  2. Step 2: Convert to fraction form
    14,851.62/20,494.68 = 8,478.54/x
  3. Step 3: Cross multiply
    14,851.62x = 20,494.68 × 8,478.54
  4. Step 4: Simplify right side
    14,851.62x = 173,764,964.17
  5. Step 5: Solve for x
    x = 173,764,964.17/14,851.62
  6. Step 6: Final answer
    x = 11,700.07

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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.