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Finding the Fourth Proportional to 14,317.20, 19,755 and 8,650.80

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Solution

The fourth proportional to 14,317.20, 19,755 and 8,650.80 is: 11,936.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,317.20 : 19,755 = 8,650.80 : x
  2. Step 2: Convert to fraction form
    14,317.20/19,755 = 8,650.80/x
  3. Step 3: Cross multiply
    14,317.20x = 19,755 × 8,650.80
  4. Step 4: Simplify right side
    14,317.20x = 170,896,554
  5. Step 5: Solve for x
    x = 170,896,554/14,317.20
  6. Step 6: Final answer
    x = 11,936.45

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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.