Home / 13,163.05-19,750.02-6,921.55

Finding the Fourth Proportional to 13,163.05, 19,750.02 and 6,921.55

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Solution

The fourth proportional to 13,163.05, 19,750.02 and 6,921.55 is: 10,385.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,163.05 : 19,750.02 = 6,921.55 : x
  2. Step 2: Convert to fraction form
    13,163.05/19,750.02 = 6,921.55/x
  3. Step 3: Cross multiply
    13,163.05x = 19,750.02 × 6,921.55
  4. Step 4: Simplify right side
    13,163.05x = 136,700,750.93
  5. Step 5: Solve for x
    x = 136,700,750.93/13,163.05
  6. Step 6: Final answer
    x = 10,385.19

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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.