Home / 25,217.25-37,738.05-20,720.91

Finding the Fourth Proportional to 25,217.25, 37,738.05 and 20,720.91

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Solution

The fourth proportional to 25,217.25, 37,738.05 and 20,720.91 is: 31,009.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,217.25 : 37,738.05 = 20,720.91 : x
  2. Step 2: Convert to fraction form
    25,217.25/37,738.05 = 20,720.91/x
  3. Step 3: Cross multiply
    25,217.25x = 37,738.05 × 20,720.91
  4. Step 4: Simplify right side
    25,217.25x = 781,966,917.99
  5. Step 5: Solve for x
    x = 781,966,917.99/25,217.25
  6. Step 6: Final answer
    x = 31,009.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.