Home / 20,297.45-28,008.50-12,741.36

Finding the Fourth Proportional to 20,297.45, 28,008.50 and 12,741.36

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Solution

The fourth proportional to 20,297.45, 28,008.50 and 12,741.36 is: 17,581.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,297.45 : 28,008.50 = 12,741.36 : x
  2. Step 2: Convert to fraction form
    20,297.45/28,008.50 = 12,741.36/x
  3. Step 3: Cross multiply
    20,297.45x = 28,008.50 × 12,741.36
  4. Step 4: Simplify right side
    20,297.45x = 356,866,317.85
  5. Step 5: Solve for x
    x = 356,866,317.85/20,297.45
  6. Step 6: Final answer
    x = 17,581.83

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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.