Home / 20,214.05-27,880.49-13,496.45

Finding the Fourth Proportional to 20,214.05, 27,880.49 and 13,496.45

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Solution

The fourth proportional to 20,214.05, 27,880.49 and 13,496.45 is: 18,615.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,214.05 : 27,880.49 = 13,496.45 : x
  2. Step 2: Convert to fraction form
    20,214.05/27,880.49 = 13,496.45/x
  3. Step 3: Cross multiply
    20,214.05x = 27,880.49 × 13,496.45
  4. Step 4: Simplify right side
    20,214.05x = 376,287,571.78
  5. Step 5: Solve for x
    x = 376,287,571.78/20,214.05
  6. Step 6: Final answer
    x = 18,615.15

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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.