Home / 10,921.37-15,067.10-6,886.87

Finding the Fourth Proportional to 10,921.37, 15,067.10 and 6,886.87

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Solution

The fourth proportional to 10,921.37, 15,067.10 and 6,886.87 is: 9,501.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.37 : 15,067.10 = 6,886.87 : x
  2. Step 2: Convert to fraction form
    10,921.37/15,067.10 = 6,886.87/x
  3. Step 3: Cross multiply
    10,921.37x = 15,067.10 × 6,886.87
  4. Step 4: Simplify right side
    10,921.37x = 103,765,158.98
  5. Step 5: Solve for x
    x = 103,765,158.98/10,921.37
  6. Step 6: Final answer
    x = 9,501.11

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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.