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Finding the Fourth Proportional to 12,988.26, 17,923.41 and 7,323.30

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Solution

The fourth proportional to 12,988.26, 17,923.41 and 7,323.30 is: 10,105.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,988.26 : 17,923.41 = 7,323.30 : x
  2. Step 2: Convert to fraction form
    12,988.26/17,923.41 = 7,323.30/x
  3. Step 3: Cross multiply
    12,988.26x = 17,923.41 × 7,323.30
  4. Step 4: Simplify right side
    12,988.26x = 131,258,508.45
  5. Step 5: Solve for x
    x = 131,258,508.45/12,988.26
  6. Step 6: Final answer
    x = 10,105.93

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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.