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Finding the Fourth Proportional to 13,017.79, 17,964.62 and 7,049.49

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Solution

The fourth proportional to 13,017.79, 17,964.62 and 7,049.49 is: 9,728.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,017.79 : 17,964.62 = 7,049.49 : x
  2. Step 2: Convert to fraction form
    13,017.79/17,964.62 = 7,049.49/x
  3. Step 3: Cross multiply
    13,017.79x = 17,964.62 × 7,049.49
  4. Step 4: Simplify right side
    13,017.79x = 126,641,283.97
  5. Step 5: Solve for x
    x = 126,641,283.97/13,017.79
  6. Step 6: Final answer
    x = 9,728.32

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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.