Home / 39,717.29-54,809.85-21,812.30

Finding the Fourth Proportional to 39,717.29, 54,809.85 and 21,812.30

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Solution

The fourth proportional to 39,717.29, 54,809.85 and 21,812.30 is: 30,100.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,717.29 : 54,809.85 = 21,812.30 : x
  2. Step 2: Convert to fraction form
    39,717.29/54,809.85 = 21,812.30/x
  3. Step 3: Cross multiply
    39,717.29x = 54,809.85 × 21,812.30
  4. Step 4: Simplify right side
    39,717.29x = 1,195,528,891.16
  5. Step 5: Solve for x
    x = 1,195,528,891.16/39,717.29
  6. Step 6: Final answer
    x = 30,100.97

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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.