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Finding the Fourth Proportional to 12,478.08, 18,700.56 and 6,622.08

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Solution

The fourth proportional to 12,478.08, 18,700.56 and 6,622.08 is: 9,924.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478.08 : 18,700.56 = 6,622.08 : x
  2. Step 2: Convert to fraction form
    12,478.08/18,700.56 = 6,622.08/x
  3. Step 3: Cross multiply
    12,478.08x = 18,700.56 × 6,622.08
  4. Step 4: Simplify right side
    12,478.08x = 123,836,604.36
  5. Step 5: Solve for x
    x = 123,836,604.36/12,478.08
  6. Step 6: Final answer
    x = 9,924.33

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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.