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Finding the Fourth Proportional to 12,344.81, 18,449.28 and 9,019.98

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Solution

The fourth proportional to 12,344.81, 18,449.28 and 9,019.98 is: 13,480.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,344.81 : 18,449.28 = 9,019.98 : x
  2. Step 2: Convert to fraction form
    12,344.81/18,449.28 = 9,019.98/x
  3. Step 3: Cross multiply
    12,344.81x = 18,449.28 × 9,019.98
  4. Step 4: Simplify right side
    12,344.81x = 166,412,136.61
  5. Step 5: Solve for x
    x = 166,412,136.61/12,344.81
  6. Step 6: Final answer
    x = 13,480.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.