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Finding the Fourth Proportional to 18,994.17, 28,454.64 and 10,648.92

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Solution

The fourth proportional to 18,994.17, 28,454.64 and 10,648.92 is: 15,952.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,994.17 : 28,454.64 = 10,648.92 : x
  2. Step 2: Convert to fraction form
    18,994.17/28,454.64 = 10,648.92/x
  3. Step 3: Cross multiply
    18,994.17x = 28,454.64 × 10,648.92
  4. Step 4: Simplify right side
    18,994.17x = 303,011,184.99
  5. Step 5: Solve for x
    x = 303,011,184.99/18,994.17
  6. Step 6: Final answer
    x = 15,952.85

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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.