Home / 13,919.27-20,864.72-6,888.74

Finding the Fourth Proportional to 13,919.27, 20,864.72 and 6,888.74

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Solution

The fourth proportional to 13,919.27, 20,864.72 and 6,888.74 is: 10,326.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,919.27 : 20,864.72 = 6,888.74 : x
  2. Step 2: Convert to fraction form
    13,919.27/20,864.72 = 6,888.74/x
  3. Step 3: Cross multiply
    13,919.27x = 20,864.72 × 6,888.74
  4. Step 4: Simplify right side
    13,919.27x = 143,731,544.15
  5. Step 5: Solve for x
    x = 143,731,544.15/13,919.27
  6. Step 6: Final answer
    x = 10,326.09

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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.