Home / 13,455.56-20,188.20-6,884.84

Finding the Fourth Proportional to 13,455.56, 20,188.20 and 6,884.84

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Solution

The fourth proportional to 13,455.56, 20,188.20 and 6,884.84 is: 10,329.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455.56 : 20,188.20 = 6,884.84 : x
  2. Step 2: Convert to fraction form
    13,455.56/20,188.20 = 6,884.84/x
  3. Step 3: Cross multiply
    13,455.56x = 20,188.20 × 6,884.84
  4. Step 4: Simplify right side
    13,455.56x = 138,992,526.89
  5. Step 5: Solve for x
    x = 138,992,526.89/13,455.56
  6. Step 6: Final answer
    x = 10,329.75

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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.