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Finding the Fourth Proportional to 18,809.98, 28,216.85 and 6,966.92

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Solution

The fourth proportional to 18,809.98, 28,216.85 and 6,966.92 is: 10,451.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,809.98 : 28,216.85 = 6,966.92 : x
  2. Step 2: Convert to fraction form
    18,809.98/28,216.85 = 6,966.92/x
  3. Step 3: Cross multiply
    18,809.98x = 28,216.85 × 6,966.92
  4. Step 4: Simplify right side
    18,809.98x = 196,584,572.31
  5. Step 5: Solve for x
    x = 196,584,572.31/18,809.98
  6. Step 6: Final answer
    x = 10,451.08

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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.