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Finding the Fourth Proportional to 16,230.34, 22,397.88 and 8,778.34

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Solution

The fourth proportional to 16,230.34, 22,397.88 and 8,778.34 is: 12,114.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,230.34 : 22,397.88 = 8,778.34 : x
  2. Step 2: Convert to fraction form
    16,230.34/22,397.88 = 8,778.34/x
  3. Step 3: Cross multiply
    16,230.34x = 22,397.88 × 8,778.34
  4. Step 4: Simplify right side
    16,230.34x = 196,616,205.92
  5. Step 5: Solve for x
    x = 196,616,205.92/16,230.34
  6. Step 6: Final answer
    x = 12,114.12

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Half scale
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Double scale
Find fourth proportional to 16,231.34, 22,399.26 and 8,779.34
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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.