Home / 39,258.12-54,177.32-21,354.27

Finding the Fourth Proportional to 39,258.12, 54,177.32 and 21,354.27

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Solution

The fourth proportional to 39,258.12, 54,177.32 and 21,354.27 is: 29,469.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,258.12 : 54,177.32 = 21,354.27 : x
  2. Step 2: Convert to fraction form
    39,258.12/54,177.32 = 21,354.27/x
  3. Step 3: Cross multiply
    39,258.12x = 54,177.32 × 21,354.27
  4. Step 4: Simplify right side
    39,258.12x = 1,156,917,119.16
  5. Step 5: Solve for x
    x = 1,156,917,119.16/39,258.12
  6. Step 6: Final answer
    x = 29,469.50

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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.