Home / 20,208.40-30,297.49-13,950.55

Finding the Fourth Proportional to 20,208.40, 30,297.49 and 13,950.55

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Solution

The fourth proportional to 20,208.40, 30,297.49 and 13,950.55 is: 20,915.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208.40 : 30,297.49 = 13,950.55 : x
  2. Step 2: Convert to fraction form
    20,208.40/30,297.49 = 13,950.55/x
  3. Step 3: Cross multiply
    20,208.40x = 30,297.49 × 13,950.55
  4. Step 4: Simplify right side
    20,208.40x = 422,666,560.16
  5. Step 5: Solve for x
    x = 422,666,560.16/20,208.40
  6. Step 6: Final answer
    x = 20,915.39

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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.