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Finding the Fourth Proportional to 14,224.30, 19,620.38 and 8,635.30

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Solution

The fourth proportional to 14,224.30, 19,620.38 and 8,635.30 is: 11,911.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,224.30 : 19,620.38 = 8,635.30 : x
  2. Step 2: Convert to fraction form
    14,224.30/19,620.38 = 8,635.30/x
  3. Step 3: Cross multiply
    14,224.30x = 19,620.38 × 8,635.30
  4. Step 4: Simplify right side
    14,224.30x = 169,427,839.95
  5. Step 5: Solve for x
    x = 169,427,839.95/14,224.30
  6. Step 6: Final answer
    x = 11,911.16

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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.