Home / 10,205.76-14,067.90-7,215.24

Finding the Fourth Proportional to 10,205.76, 14,067.90 and 7,215.24

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Solution

The fourth proportional to 10,205.76, 14,067.90 and 7,215.24 is: 9,945.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,205.76 : 14,067.90 = 7,215.24 : x
  2. Step 2: Convert to fraction form
    10,205.76/14,067.90 = 7,215.24/x
  3. Step 3: Cross multiply
    10,205.76x = 14,067.90 × 7,215.24
  4. Step 4: Simplify right side
    10,205.76x = 101,503,274.80
  5. Step 5: Solve for x
    x = 101,503,274.80/10,205.76
  6. Step 6: Final answer
    x = 9,945.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.