Home / 13,979.58-20,950.72-5,205.66

Finding the Fourth Proportional to 13,979.58, 20,950.72 and 5,205.66

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Solution

The fourth proportional to 13,979.58, 20,950.72 and 5,205.66 is: 7,801.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.58 : 20,950.72 = 5,205.66 : x
  2. Step 2: Convert to fraction form
    13,979.58/20,950.72 = 5,205.66/x
  3. Step 3: Cross multiply
    13,979.58x = 20,950.72 × 5,205.66
  4. Step 4: Simplify right side
    13,979.58x = 109,062,233.34
  5. Step 5: Solve for x
    x = 109,062,233.34/13,979.58
  6. Step 6: Final answer
    x = 7,801.54

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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.