Home / 20,290.58-28,022.99-13,933.92

Finding the Fourth Proportional to 20,290.58, 28,022.99 and 13,933.92

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Solution

The fourth proportional to 20,290.58, 28,022.99 and 13,933.92 is: 19,243.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,290.58 : 28,022.99 = 13,933.92 : x
  2. Step 2: Convert to fraction form
    20,290.58/28,022.99 = 13,933.92/x
  3. Step 3: Cross multiply
    20,290.58x = 28,022.99 × 13,933.92
  4. Step 4: Simplify right side
    20,290.58x = 390,470,175.43
  5. Step 5: Solve for x
    x = 390,470,175.43/20,290.58
  6. Step 6: Final answer
    x = 19,243.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.