Home / 12,859.40-19,290.18-4,961.59

Finding the Fourth Proportional to 12,859.40, 19,290.18 and 4,961.59

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Solution

The fourth proportional to 12,859.40, 19,290.18 and 4,961.59 is: 7,442.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,859.40 : 19,290.18 = 4,961.59 : x
  2. Step 2: Convert to fraction form
    12,859.40/19,290.18 = 4,961.59/x
  3. Step 3: Cross multiply
    12,859.40x = 19,290.18 × 4,961.59
  4. Step 4: Simplify right side
    12,859.40x = 95,709,974.08
  5. Step 5: Solve for x
    x = 95,709,974.08/12,859.40
  6. Step 6: Final answer
    x = 7,442.81

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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.