Home / 39,385.71-54,351.07-21,481.07

Finding the Fourth Proportional to 39,385.71, 54,351.07 and 21,481.07

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Solution

The fourth proportional to 39,385.71, 54,351.07 and 21,481.07 is: 29,643.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,385.71 : 54,351.07 = 21,481.07 : x
  2. Step 2: Convert to fraction form
    39,385.71/54,351.07 = 21,481.07/x
  3. Step 3: Cross multiply
    39,385.71x = 54,351.07 × 21,481.07
  4. Step 4: Simplify right side
    39,385.71x = 1,167,518,813.79
  5. Step 5: Solve for x
    x = 1,167,518,813.79/39,385.71
  6. Step 6: Final answer
    x = 29,643.21

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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.