Home / 13,163.48-18,153.84-10,921.81

Finding the Fourth Proportional to 13,163.48, 18,153.84 and 10,921.81

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Solution

The fourth proportional to 13,163.48, 18,153.84 and 10,921.81 is: 15,062.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,163.48 : 18,153.84 = 10,921.81 : x
  2. Step 2: Convert to fraction form
    13,163.48/18,153.84 = 10,921.81/x
  3. Step 3: Cross multiply
    13,163.48x = 18,153.84 × 10,921.81
  4. Step 4: Simplify right side
    13,163.48x = 198,272,700.48
  5. Step 5: Solve for x
    x = 198,272,700.48/13,163.48
  6. Step 6: Final answer
    x = 15,062.33

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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.