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Finding the Fourth Proportional to 12,484.10, 18,716.78 and 7,552.74

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Solution

The fourth proportional to 12,484.10, 18,716.78 and 7,552.74 is: 11,323.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,484.10 : 18,716.78 = 7,552.74 : x
  2. Step 2: Convert to fraction form
    12,484.10/18,716.78 = 7,552.74/x
  3. Step 3: Cross multiply
    12,484.10x = 18,716.78 × 7,552.74
  4. Step 4: Simplify right side
    12,484.10x = 141,362,972.98
  5. Step 5: Solve for x
    x = 141,362,972.98/12,484.10
  6. Step 6: Final answer
    x = 11,323.44

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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.