Home / 20,792.13-28,696.38-13,241.71

Finding the Fourth Proportional to 20,792.13, 28,696.38 and 13,241.71

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Solution

The fourth proportional to 20,792.13, 28,696.38 and 13,241.71 is: 18,275.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.13 : 28,696.38 = 13,241.71 : x
  2. Step 2: Convert to fraction form
    20,792.13/28,696.38 = 13,241.71/x
  3. Step 3: Cross multiply
    20,792.13x = 28,696.38 × 13,241.71
  4. Step 4: Simplify right side
    20,792.13x = 379,989,128.22
  5. Step 5: Solve for x
    x = 379,989,128.22/20,792.13
  6. Step 6: Final answer
    x = 18,275.63

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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.