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Finding the Fourth Proportional to 18,408.55, 27,742.39 and 16,655.92

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Solution

The fourth proportional to 18,408.55, 27,742.39 and 16,655.92 is: 25,101.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,408.55 : 27,742.39 = 16,655.92 : x
  2. Step 2: Convert to fraction form
    18,408.55/27,742.39 = 16,655.92/x
  3. Step 3: Cross multiply
    18,408.55x = 27,742.39 × 16,655.92
  4. Step 4: Simplify right side
    18,408.55x = 462,075,028.45
  5. Step 5: Solve for x
    x = 462,075,028.45/18,408.55
  6. Step 6: Final answer
    x = 25,101.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.