Home / 39,725.71-54,818.77-21,821.47

Finding the Fourth Proportional to 39,725.71, 54,818.77 and 21,821.47

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Solution

The fourth proportional to 39,725.71, 54,818.77 and 21,821.47 is: 30,112.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,725.71 : 54,818.77 = 21,821.47 : x
  2. Step 2: Convert to fraction form
    39,725.71/54,818.77 = 21,821.47/x
  3. Step 3: Cross multiply
    39,725.71x = 54,818.77 × 21,821.47
  4. Step 4: Simplify right side
    39,725.71x = 1,196,226,144.99
  5. Step 5: Solve for x
    x = 1,196,226,144.99/39,725.71
  6. Step 6: Final answer
    x = 30,112.14

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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.