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Finding the Fourth Proportional to 14,644.79, 20,209.49 and 8,357.03

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Solution

The fourth proportional to 14,644.79, 20,209.49 and 8,357.03 is: 11,532.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,644.79 : 20,209.49 = 8,357.03 : x
  2. Step 2: Convert to fraction form
    14,644.79/20,209.49 = 8,357.03/x
  3. Step 3: Cross multiply
    14,644.79x = 20,209.49 × 8,357.03
  4. Step 4: Simplify right side
    14,644.79x = 168,891,272.43
  5. Step 5: Solve for x
    x = 168,891,272.43/14,644.79
  6. Step 6: Final answer
    x = 11,532.52

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Double scale
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Similar ratio
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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.