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Finding the Fourth Proportional to 16,900.70, 25,348.65 and 5,215.10

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Solution

The fourth proportional to 16,900.70, 25,348.65 and 5,215.10 is: 7,821.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,900.70 : 25,348.65 = 5,215.10 : x
  2. Step 2: Convert to fraction form
    16,900.70/25,348.65 = 5,215.10/x
  3. Step 3: Cross multiply
    16,900.70x = 25,348.65 × 5,215.10
  4. Step 4: Simplify right side
    16,900.70x = 132,195,744.62
  5. Step 5: Solve for x
    x = 132,195,744.62/16,900.70
  6. Step 6: Final answer
    x = 7,821.91

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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.