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Finding the Fourth Proportional to 14,232.80, 19,632.10 and 8,643.80

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Solution

The fourth proportional to 14,232.80, 19,632.10 and 8,643.80 is: 11,922.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,232.80 : 19,632.10 = 8,643.80 : x
  2. Step 2: Convert to fraction form
    14,232.80/19,632.10 = 8,643.80/x
  3. Step 3: Cross multiply
    14,232.80x = 19,632.10 × 8,643.80
  4. Step 4: Simplify right side
    14,232.80x = 169,695,945.98
  5. Step 5: Solve for x
    x = 169,695,945.98/14,232.80
  6. Step 6: Final answer
    x = 11,922.88

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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.