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Finding the Fourth Proportional to 12,618.52, 18,903.52 and 7,054.99

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Solution

The fourth proportional to 12,618.52, 18,903.52 and 7,054.99 is: 10,568.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,618.52 : 18,903.52 = 7,054.99 : x
  2. Step 2: Convert to fraction form
    12,618.52/18,903.52 = 7,054.99/x
  3. Step 3: Cross multiply
    12,618.52x = 18,903.52 × 7,054.99
  4. Step 4: Simplify right side
    12,618.52x = 133,364,144.56
  5. Step 5: Solve for x
    x = 133,364,144.56/12,618.52
  6. Step 6: Final answer
    x = 10,568.92

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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.