Home / 13,677.08-20,518.38-4,318.56

Finding the Fourth Proportional to 13,677.08, 20,518.38 and 4,318.56

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Solution

The fourth proportional to 13,677.08, 20,518.38 and 4,318.56 is: 6,478.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,677.08 : 20,518.38 = 4,318.56 : x
  2. Step 2: Convert to fraction form
    13,677.08/20,518.38 = 4,318.56/x
  3. Step 3: Cross multiply
    13,677.08x = 20,518.38 × 4,318.56
  4. Step 4: Simplify right side
    13,677.08x = 88,609,855.13
  5. Step 5: Solve for x
    x = 88,609,855.13/13,677.08
  6. Step 6: Final answer
    x = 6,478.71

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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.