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Finding the Fourth Proportional to 17,970.19, 26,919.62 and 8,469.50

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Solution

The fourth proportional to 17,970.19, 26,919.62 and 8,469.50 is: 12,687.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,970.19 : 26,919.62 = 8,469.50 : x
  2. Step 2: Convert to fraction form
    17,970.19/26,919.62 = 8,469.50/x
  3. Step 3: Cross multiply
    17,970.19x = 26,919.62 × 8,469.50
  4. Step 4: Simplify right side
    17,970.19x = 227,995,721.59
  5. Step 5: Solve for x
    x = 227,995,721.59/17,970.19
  6. Step 6: Final answer
    x = 12,687.44

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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.