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Finding the Fourth Proportional to 18,888.78, 28,321.02 and 9,027.84

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Solution

The fourth proportional to 18,888.78, 28,321.02 and 9,027.84 is: 13,535.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,888.78 : 28,321.02 = 9,027.84 : x
  2. Step 2: Convert to fraction form
    18,888.78/28,321.02 = 9,027.84/x
  3. Step 3: Cross multiply
    18,888.78x = 28,321.02 × 9,027.84
  4. Step 4: Simplify right side
    18,888.78x = 255,677,637.20
  5. Step 5: Solve for x
    x = 255,677,637.20/18,888.78
  6. Step 6: Final answer
    x = 13,535.95

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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.