Home / 13,860.72-20,778.32-5,539.19

Finding the Fourth Proportional to 13,860.72, 20,778.32 and 5,539.19

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Solution

The fourth proportional to 13,860.72, 20,778.32 and 5,539.19 is: 8,303.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,860.72 : 20,778.32 = 5,539.19 : x
  2. Step 2: Convert to fraction form
    13,860.72/20,778.32 = 5,539.19/x
  3. Step 3: Cross multiply
    13,860.72x = 20,778.32 × 5,539.19
  4. Step 4: Simplify right side
    13,860.72x = 115,094,972.32
  5. Step 5: Solve for x
    x = 115,094,972.32/13,860.72
  6. Step 6: Final answer
    x = 8,303.68

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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.