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Finding the Fourth Proportional to 16,758.80, 25,138.20 and 14,253.20

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Solution

The fourth proportional to 16,758.80, 25,138.20 and 14,253.20 is: 21,379.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,758.80 : 25,138.20 = 14,253.20 : x
  2. Step 2: Convert to fraction form
    16,758.80/25,138.20 = 14,253.20/x
  3. Step 3: Cross multiply
    16,758.80x = 25,138.20 × 14,253.20
  4. Step 4: Simplify right side
    16,758.80x = 358,299,792.24
  5. Step 5: Solve for x
    x = 358,299,792.24/16,758.80
  6. Step 6: Final answer
    x = 21,379.80

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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.