Home / 12,860.31-19,290.26-4,095.11

Finding the Fourth Proportional to 12,860.31, 19,290.26 and 4,095.11

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Solution

The fourth proportional to 12,860.31, 19,290.26 and 4,095.11 is: 6,142.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,860.31 : 19,290.26 = 4,095.11 : x
  2. Step 2: Convert to fraction form
    12,860.31/19,290.26 = 4,095.11/x
  3. Step 3: Cross multiply
    12,860.31x = 19,290.26 × 4,095.11
  4. Step 4: Simplify right side
    12,860.31x = 78,995,619.70
  5. Step 5: Solve for x
    x = 78,995,619.70/12,860.31
  6. Step 6: Final answer
    x = 6,142.59

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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.