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Finding the Fourth Proportional to 18,994.74, 28,476.51 and 12,338.10

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Solution

The fourth proportional to 18,994.74, 28,476.51 and 12,338.10 is: 18,497.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,994.74 : 28,476.51 = 12,338.10 : x
  2. Step 2: Convert to fraction form
    18,994.74/28,476.51 = 12,338.10/x
  3. Step 3: Cross multiply
    18,994.74x = 28,476.51 × 12,338.10
  4. Step 4: Simplify right side
    18,994.74x = 351,346,028.03
  5. Step 5: Solve for x
    x = 351,346,028.03/18,994.74
  6. Step 6: Final answer
    x = 18,497.02

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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.