Home / 13,860.15-20,781.87-5,845.35

Finding the Fourth Proportional to 13,860.15, 20,781.87 and 5,845.35

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Solution

The fourth proportional to 13,860.15, 20,781.87 and 5,845.35 is: 8,764.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,860.15 : 20,781.87 = 5,845.35 : x
  2. Step 2: Convert to fraction form
    13,860.15/20,781.87 = 5,845.35/x
  3. Step 3: Cross multiply
    13,860.15x = 20,781.87 × 5,845.35
  4. Step 4: Simplify right side
    13,860.15x = 121,477,359.82
  5. Step 5: Solve for x
    x = 121,477,359.82/13,860.15
  6. Step 6: Final answer
    x = 8,764.51

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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.