Home / 12,943.80-19,415.70-12,759.53

Finding the Fourth Proportional to 12,943.80, 19,415.70 and 12,759.53

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Solution

The fourth proportional to 12,943.80, 19,415.70 and 12,759.53 is: 19,139.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,943.80 : 19,415.70 = 12,759.53 : x
  2. Step 2: Convert to fraction form
    12,943.80/19,415.70 = 12,759.53/x
  3. Step 3: Cross multiply
    12,943.80x = 19,415.70 × 12,759.53
  4. Step 4: Simplify right side
    12,943.80x = 247,735,109.54
  5. Step 5: Solve for x
    x = 247,735,109.54/12,943.80
  6. Step 6: Final answer
    x = 19,139.29

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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.