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Finding the Fourth Proportional to 15,118.92, 20,867.94 and 10,084.68

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Solution

The fourth proportional to 15,118.92, 20,867.94 and 10,084.68 is: 13,919.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,118.92 : 20,867.94 = 10,084.68 : x
  2. Step 2: Convert to fraction form
    15,118.92/20,867.94 = 10,084.68/x
  3. Step 3: Cross multiply
    15,118.92x = 20,867.94 × 10,084.68
  4. Step 4: Simplify right side
    15,118.92x = 210,446,497.16
  5. Step 5: Solve for x
    x = 210,446,497.16/15,118.92
  6. Step 6: Final answer
    x = 13,919.41

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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.