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Finding the Fourth Proportional to 18,994.95, 28,493.63 and 7,308.16

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Solution

The fourth proportional to 18,994.95, 28,493.63 and 7,308.16 is: 10,962.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,994.95 : 28,493.63 = 7,308.16 : x
  2. Step 2: Convert to fraction form
    18,994.95/28,493.63 = 7,308.16/x
  3. Step 3: Cross multiply
    18,994.95x = 28,493.63 × 7,308.16
  4. Step 4: Simplify right side
    18,994.95x = 208,236,007.02
  5. Step 5: Solve for x
    x = 208,236,007.02/18,994.95
  6. Step 6: Final answer
    x = 10,962.71

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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.