Home / 20,851.98-28,788.99-13,694.59

Finding the Fourth Proportional to 20,851.98, 28,788.99 and 13,694.59

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Solution

The fourth proportional to 20,851.98, 28,788.99 and 13,694.59 is: 18,907.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,851.98 : 28,788.99 = 13,694.59 : x
  2. Step 2: Convert to fraction form
    20,851.98/28,788.99 = 13,694.59/x
  3. Step 3: Cross multiply
    20,851.98x = 28,788.99 × 13,694.59
  4. Step 4: Simplify right side
    20,851.98x = 394,253,595.71
  5. Step 5: Solve for x
    x = 394,253,595.71/20,851.98
  6. Step 6: Final answer
    x = 18,907.25

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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.