Home / 12,906.12-19,357.20-5,012.40

Finding the Fourth Proportional to 12,906.12, 19,357.20 and 5,012.40

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Solution

The fourth proportional to 12,906.12, 19,357.20 and 5,012.40 is: 7,517.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,906.12 : 19,357.20 = 5,012.40 : x
  2. Step 2: Convert to fraction form
    12,906.12/19,357.20 = 5,012.40/x
  3. Step 3: Cross multiply
    12,906.12x = 19,357.20 × 5,012.40
  4. Step 4: Simplify right side
    12,906.12x = 97,026,029.28
  5. Step 5: Solve for x
    x = 97,026,029.28/12,906.12
  6. Step 6: Final answer
    x = 7,517.83

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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.