Home / 39,195.31-54,088.63-21,289.92

Finding the Fourth Proportional to 39,195.31, 54,088.63 and 21,289.92

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Solution

The fourth proportional to 39,195.31, 54,088.63 and 21,289.92 is: 29,379.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,195.31 : 54,088.63 = 21,289.92 : x
  2. Step 2: Convert to fraction form
    39,195.31/54,088.63 = 21,289.92/x
  3. Step 3: Cross multiply
    39,195.31x = 54,088.63 × 21,289.92
  4. Step 4: Simplify right side
    39,195.31x = 1,151,542,552.38
  5. Step 5: Solve for x
    x = 1,151,542,552.38/39,195.31
  6. Step 6: Final answer
    x = 29,379.60

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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.