Home / 13,906.08-20,844.54-5,135.40

Finding the Fourth Proportional to 13,906.08, 20,844.54 and 5,135.40

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Solution

The fourth proportional to 13,906.08, 20,844.54 and 5,135.40 is: 7,697.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,906.08 : 20,844.54 = 5,135.40 : x
  2. Step 2: Convert to fraction form
    13,906.08/20,844.54 = 5,135.40/x
  3. Step 3: Cross multiply
    13,906.08x = 20,844.54 × 5,135.40
  4. Step 4: Simplify right side
    13,906.08x = 107,045,050.72
  5. Step 5: Solve for x
    x = 107,045,050.72/13,906.08
  6. Step 6: Final answer
    x = 7,697.72

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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.