Home / 13,920.48-20,878.41-4,560.36

Finding the Fourth Proportional to 13,920.48, 20,878.41 and 4,560.36

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Solution

The fourth proportional to 13,920.48, 20,878.41 and 4,560.36 is: 6,839.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.48 : 20,878.41 = 4,560.36 : x
  2. Step 2: Convert to fraction form
    13,920.48/20,878.41 = 4,560.36/x
  3. Step 3: Cross multiply
    13,920.48x = 20,878.41 × 4,560.36
  4. Step 4: Simplify right side
    13,920.48x = 95,213,065.83
  5. Step 5: Solve for x
    x = 95,213,065.83/13,920.48
  6. Step 6: Final answer
    x = 6,839.78

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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.