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Finding the Fourth Proportional to 18,187.71, 27,263.08 and 13,795.95

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Solution

The fourth proportional to 18,187.71, 27,263.08 and 13,795.95 is: 20,679.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,187.71 : 27,263.08 = 13,795.95 : x
  2. Step 2: Convert to fraction form
    18,187.71/27,263.08 = 13,795.95/x
  3. Step 3: Cross multiply
    18,187.71x = 27,263.08 × 13,795.95
  4. Step 4: Simplify right side
    18,187.71x = 376,119,977.98
  5. Step 5: Solve for x
    x = 376,119,977.98/18,187.71
  6. Step 6: Final answer
    x = 20,679.89

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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.