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Finding the Fourth Proportional to 17,811.20, 26,774.40 and 16,428.80

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Solution

The fourth proportional to 17,811.20, 26,774.40 and 16,428.80 is: 24,696.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,811.20 : 26,774.40 = 16,428.80 : x
  2. Step 2: Convert to fraction form
    17,811.20/26,774.40 = 16,428.80/x
  3. Step 3: Cross multiply
    17,811.20x = 26,774.40 × 16,428.80
  4. Step 4: Simplify right side
    17,811.20x = 439,871,262.72
  5. Step 5: Solve for x
    x = 439,871,262.72/17,811.20
  6. Step 6: Final answer
    x = 24,696.33

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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.