Home / 13,207.86-19,817.26-5,422.14

Finding the Fourth Proportional to 13,207.86, 19,817.26 and 5,422.14

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Solution

The fourth proportional to 13,207.86, 19,817.26 and 5,422.14 is: 8,135.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207.86 : 19,817.26 = 5,422.14 : x
  2. Step 2: Convert to fraction form
    13,207.86/19,817.26 = 5,422.14/x
  3. Step 3: Cross multiply
    13,207.86x = 19,817.26 × 5,422.14
  4. Step 4: Simplify right side
    13,207.86x = 107,451,944.58
  5. Step 5: Solve for x
    x = 107,451,944.58/13,207.86
  6. Step 6: Final answer
    x = 8,135.45

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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.