Home / 13,917.29-20,830.77-10,218.69

Finding the Fourth Proportional to 13,917.29, 20,830.77 and 10,218.69

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Solution

The fourth proportional to 13,917.29, 20,830.77 and 10,218.69 is: 15,294.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,917.29 : 20,830.77 = 10,218.69 : x
  2. Step 2: Convert to fraction form
    13,917.29/20,830.77 = 10,218.69/x
  3. Step 3: Cross multiply
    13,917.29x = 20,830.77 × 10,218.69
  4. Step 4: Simplify right side
    13,917.29x = 212,863,181.09
  5. Step 5: Solve for x
    x = 212,863,181.09/13,917.29
  6. Step 6: Final answer
    x = 15,294.88

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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.