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Finding the Fourth Proportional to 18,101.53, 27,135.59 and 12,557.49

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Solution

The fourth proportional to 18,101.53, 27,135.59 and 12,557.49 is: 18,824.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,101.53 : 27,135.59 = 12,557.49 : x
  2. Step 2: Convert to fraction form
    18,101.53/27,135.59 = 12,557.49/x
  3. Step 3: Cross multiply
    18,101.53x = 27,135.59 × 12,557.49
  4. Step 4: Simplify right side
    18,101.53x = 340,754,900.07
  5. Step 5: Solve for x
    x = 340,754,900.07/18,101.53
  6. Step 6: Final answer
    x = 18,824.65

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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.