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Finding the Fourth Proportional to 18,491.19, 27,712.95 and 16,109.64

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Solution

The fourth proportional to 18,491.19, 27,712.95 and 16,109.64 is: 24,143.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,491.19 : 27,712.95 = 16,109.64 : x
  2. Step 2: Convert to fraction form
    18,491.19/27,712.95 = 16,109.64/x
  3. Step 3: Cross multiply
    18,491.19x = 27,712.95 × 16,109.64
  4. Step 4: Simplify right side
    18,491.19x = 446,445,647.84
  5. Step 5: Solve for x
    x = 446,445,647.84/18,491.19
  6. Step 6: Final answer
    x = 24,143.69

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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.