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Finding the Fourth Proportional to 17,719.20, 26,578.80 and 14,954.40

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Solution

The fourth proportional to 17,719.20, 26,578.80 and 14,954.40 is: 22,431.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,719.20 : 26,578.80 = 14,954.40 : x
  2. Step 2: Convert to fraction form
    17,719.20/26,578.80 = 14,954.40/x
  3. Step 3: Cross multiply
    17,719.20x = 26,578.80 × 14,954.40
  4. Step 4: Simplify right side
    17,719.20x = 397,470,006.72
  5. Step 5: Solve for x
    x = 397,470,006.72/17,719.20
  6. Step 6: Final answer
    x = 22,431.60

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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.