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Finding the Fourth Proportional to 13,007, 17,949.90 and 9,287.48

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Solution

The fourth proportional to 13,007, 17,949.90 and 9,287.48 is: 12,816.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,007 : 17,949.90 = 9,287.48 : x
  2. Step 2: Convert to fraction form
    13,007/17,949.90 = 9,287.48/x
  3. Step 3: Cross multiply
    13,007x = 17,949.90 × 9,287.48
  4. Step 4: Simplify right side
    13,007x = 166,709,337.25
  5. Step 5: Solve for x
    x = 166,709,337.25/13,007
  6. Step 6: Final answer
    x = 12,816.89

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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.