Home / 39,060.75-53,904.05-21,155.81

Finding the Fourth Proportional to 39,060.75, 53,904.05 and 21,155.81

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Solution

The fourth proportional to 39,060.75, 53,904.05 and 21,155.81 is: 29,195.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,060.75 : 53,904.05 = 21,155.81 : x
  2. Step 2: Convert to fraction form
    39,060.75/53,904.05 = 21,155.81/x
  3. Step 3: Cross multiply
    39,060.75x = 53,904.05 × 21,155.81
  4. Step 4: Simplify right side
    39,060.75x = 1,140,383,464.73
  5. Step 5: Solve for x
    x = 1,140,383,464.73/39,060.75
  6. Step 6: Final answer
    x = 29,195.12

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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.