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Finding the Fourth Proportional to 12,665.03, 19,001.39 and 8,974.40

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Solution

The fourth proportional to 12,665.03, 19,001.39 and 8,974.40 is: 13,464.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,665.03 : 19,001.39 = 8,974.40 : x
  2. Step 2: Convert to fraction form
    12,665.03/19,001.39 = 8,974.40/x
  3. Step 3: Cross multiply
    12,665.03x = 19,001.39 × 8,974.40
  4. Step 4: Simplify right side
    12,665.03x = 170,525,934.54
  5. Step 5: Solve for x
    x = 170,525,934.54/12,665.03
  6. Step 6: Final answer
    x = 13,464.32

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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.