Home / 13,889.12-20,833.64-3,500.86

Finding the Fourth Proportional to 13,889.12, 20,833.64 and 3,500.86

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Solution

The fourth proportional to 13,889.12, 20,833.64 and 3,500.86 is: 5,251.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.12 : 20,833.64 = 3,500.86 : x
  2. Step 2: Convert to fraction form
    13,889.12/20,833.64 = 3,500.86/x
  3. Step 3: Cross multiply
    13,889.12x = 20,833.64 × 3,500.86
  4. Step 4: Simplify right side
    13,889.12x = 72,935,656.93
  5. Step 5: Solve for x
    x = 72,935,656.93/13,889.12
  6. Step 6: Final answer
    x = 5,251.28

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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.