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Finding the Fourth Proportional to 14,348.80, 19,797.06 and 8,685.64

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Solution

The fourth proportional to 14,348.80, 19,797.06 and 8,685.64 is: 11,983.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,348.80 : 19,797.06 = 8,685.64 : x
  2. Step 2: Convert to fraction form
    14,348.80/19,797.06 = 8,685.64/x
  3. Step 3: Cross multiply
    14,348.80x = 19,797.06 × 8,685.64
  4. Step 4: Simplify right side
    14,348.80x = 171,950,136.22
  5. Step 5: Solve for x
    x = 171,950,136.22/14,348.80
  6. Step 6: Final answer
    x = 11,983.59

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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.