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Finding the Fourth Proportional to 14,636.70, 20,193.21 and 9,330.30

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Solution

The fourth proportional to 14,636.70, 20,193.21 and 9,330.30 is: 12,872.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,636.70 : 20,193.21 = 9,330.30 : x
  2. Step 2: Convert to fraction form
    14,636.70/20,193.21 = 9,330.30/x
  3. Step 3: Cross multiply
    14,636.70x = 20,193.21 × 9,330.30
  4. Step 4: Simplify right side
    14,636.70x = 188,408,707.26
  5. Step 5: Solve for x
    x = 188,408,707.26/14,636.70
  6. Step 6: Final answer
    x = 12,872.35

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Double scale
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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.