Home / 13,581.82-20,374.56-12,761.71

Finding the Fourth Proportional to 13,581.82, 20,374.56 and 12,761.71

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Solution

The fourth proportional to 13,581.82, 20,374.56 and 12,761.71 is: 19,144.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.82 : 20,374.56 = 12,761.71 : x
  2. Step 2: Convert to fraction form
    13,581.82/20,374.56 = 12,761.71/x
  3. Step 3: Cross multiply
    13,581.82x = 20,374.56 × 12,761.71
  4. Step 4: Simplify right side
    13,581.82x = 260,014,226.10
  5. Step 5: Solve for x
    x = 260,014,226.10/13,581.82
  6. Step 6: Final answer
    x = 19,144.28

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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.