Home / 19,399.40-29,049.66-12,805.46

Finding the Fourth Proportional to 19,399.40, 29,049.66 and 12,805.46

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Solution

The fourth proportional to 19,399.40, 29,049.66 and 12,805.46 is: 19,175.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,399.40 : 29,049.66 = 12,805.46 : x
  2. Step 2: Convert to fraction form
    19,399.40/29,049.66 = 12,805.46/x
  3. Step 3: Cross multiply
    19,399.40x = 29,049.66 × 12,805.46
  4. Step 4: Simplify right side
    19,399.40x = 371,994,113.90
  5. Step 5: Solve for x
    x = 371,994,113.90/19,399.40
  6. Step 6: Final answer
    x = 19,175.55

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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.