Home / 10,139.72-13,995.30-6,163.47

Finding the Fourth Proportional to 10,139.72, 13,995.30 and 6,163.47

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Solution

The fourth proportional to 10,139.72, 13,995.30 and 6,163.47 is: 8,507.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,139.72 : 13,995.30 = 6,163.47 : x
  2. Step 2: Convert to fraction form
    10,139.72/13,995.30 = 6,163.47/x
  3. Step 3: Cross multiply
    10,139.72x = 13,995.30 × 6,163.47
  4. Step 4: Simplify right side
    10,139.72x = 86,259,611.69
  5. Step 5: Solve for x
    x = 86,259,611.69/10,139.72
  6. Step 6: Final answer
    x = 8,507.10

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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.