Home / 13,539.82-20,313.18-5,217.58

Finding the Fourth Proportional to 13,539.82, 20,313.18 and 5,217.58

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Solution

The fourth proportional to 13,539.82, 20,313.18 and 5,217.58 is: 7,827.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539.82 : 20,313.18 = 5,217.58 : x
  2. Step 2: Convert to fraction form
    13,539.82/20,313.18 = 5,217.58/x
  3. Step 3: Cross multiply
    13,539.82x = 20,313.18 × 5,217.58
  4. Step 4: Simplify right side
    13,539.82x = 105,985,641.70
  5. Step 5: Solve for x
    x = 105,985,641.70/13,539.82
  6. Step 6: Final answer
    x = 7,827.70

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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.