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Finding the Fourth Proportional to 12,013.25, 18,015.03 and 4,988.48

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Solution

The fourth proportional to 12,013.25, 18,015.03 and 4,988.48 is: 7,480.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,013.25 : 18,015.03 = 4,988.48 : x
  2. Step 2: Convert to fraction form
    12,013.25/18,015.03 = 4,988.48/x
  3. Step 3: Cross multiply
    12,013.25x = 18,015.03 × 4,988.48
  4. Step 4: Simplify right side
    12,013.25x = 89,867,526.78
  5. Step 5: Solve for x
    x = 89,867,526.78/12,013.25
  6. Step 6: Final answer
    x = 7,480.70

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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.