Home / 39,163.13-54,045.17-21,258.12

Finding the Fourth Proportional to 39,163.13, 54,045.17 and 21,258.12

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Solution

The fourth proportional to 39,163.13, 54,045.17 and 21,258.12 is: 29,336.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,163.13 : 54,045.17 = 21,258.12 : x
  2. Step 2: Convert to fraction form
    39,163.13/54,045.17 = 21,258.12/x
  3. Step 3: Cross multiply
    39,163.13x = 54,045.17 × 21,258.12
  4. Step 4: Simplify right side
    39,163.13x = 1,148,898,709.28
  5. Step 5: Solve for x
    x = 1,148,898,709.28/39,163.13
  6. Step 6: Final answer
    x = 29,336.23

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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.