Home / 12,930.20-19,346.70-8,556.20

Finding the Fourth Proportional to 12,930.20, 19,346.70 and 8,556.20

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Solution

The fourth proportional to 12,930.20, 19,346.70 and 8,556.20 is: 12,802.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,930.20 : 19,346.70 = 8,556.20 : x
  2. Step 2: Convert to fraction form
    12,930.20/19,346.70 = 8,556.20/x
  3. Step 3: Cross multiply
    12,930.20x = 19,346.70 × 8,556.20
  4. Step 4: Simplify right side
    12,930.20x = 165,534,234.54
  5. Step 5: Solve for x
    x = 165,534,234.54/12,930.20
  6. Step 6: Final answer
    x = 12,802.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.