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Finding the Fourth Proportional to 14,899.64, 20,561.28 and 8,185.52

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Solution

The fourth proportional to 14,899.64, 20,561.28 and 8,185.52 is: 11,295.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,899.64 : 20,561.28 = 8,185.52 : x
  2. Step 2: Convert to fraction form
    14,899.64/20,561.28 = 8,185.52/x
  3. Step 3: Cross multiply
    14,899.64x = 20,561.28 × 8,185.52
  4. Step 4: Simplify right side
    14,899.64x = 168,304,768.67
  5. Step 5: Solve for x
    x = 168,304,768.67/14,899.64
  6. Step 6: Final answer
    x = 11,295.89

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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.