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Finding the Fourth Proportional to 14,227.80, 19,614.60 and 8,919.06

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Solution

The fourth proportional to 14,227.80, 19,614.60 and 8,919.06 is: 12,295.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,227.80 : 19,614.60 = 8,919.06 : x
  2. Step 2: Convert to fraction form
    14,227.80/19,614.60 = 8,919.06/x
  3. Step 3: Cross multiply
    14,227.80x = 19,614.60 × 8,919.06
  4. Step 4: Simplify right side
    14,227.80x = 174,943,794.28
  5. Step 5: Solve for x
    x = 174,943,794.28/14,227.80
  6. Step 6: Final answer
    x = 12,295.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.