Home / 19,233.40-28,878.90-13,415.80

Finding the Fourth Proportional to 19,233.40, 28,878.90 and 13,415.80

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Solution

The fourth proportional to 19,233.40, 28,878.90 and 13,415.80 is: 20,143.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,233.40 : 28,878.90 = 13,415.80 : x
  2. Step 2: Convert to fraction form
    19,233.40/28,878.90 = 13,415.80/x
  3. Step 3: Cross multiply
    19,233.40x = 28,878.90 × 13,415.80
  4. Step 4: Simplify right side
    19,233.40x = 387,433,546.62
  5. Step 5: Solve for x
    x = 387,433,546.62/19,233.40
  6. Step 6: Final answer
    x = 20,143.79

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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.