Home / 13,539.48-20,309.64-3,678.96

Finding the Fourth Proportional to 13,539.48, 20,309.64 and 3,678.96

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Solution

The fourth proportional to 13,539.48, 20,309.64 and 3,678.96 is: 5,518.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539.48 : 20,309.64 = 3,678.96 : x
  2. Step 2: Convert to fraction form
    13,539.48/20,309.64 = 3,678.96/x
  3. Step 3: Cross multiply
    13,539.48x = 20,309.64 × 3,678.96
  4. Step 4: Simplify right side
    13,539.48x = 74,718,353.17
  5. Step 5: Solve for x
    x = 74,718,353.17/13,539.48
  6. Step 6: Final answer
    x = 5,518.55

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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.