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Finding the Fourth Proportional to 19,245.66, 28,878.06 and 10,806.92

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Solution

The fourth proportional to 19,245.66, 28,878.06 and 10,806.92 is: 16,215.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,245.66 : 28,878.06 = 10,806.92 : x
  2. Step 2: Convert to fraction form
    19,245.66/28,878.06 = 10,806.92/x
  3. Step 3: Cross multiply
    19,245.66x = 28,878.06 × 10,806.92
  4. Step 4: Simplify right side
    19,245.66x = 312,082,884.18
  5. Step 5: Solve for x
    x = 312,082,884.18/19,245.66
  6. Step 6: Final answer
    x = 16,215.75

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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.