Home / 20,295.48-27,974.28-13,578.72

Finding the Fourth Proportional to 20,295.48, 27,974.28 and 13,578.72

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Solution

The fourth proportional to 20,295.48, 27,974.28 and 13,578.72 is: 18,716.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,295.48 : 27,974.28 = 13,578.72 : x
  2. Step 2: Convert to fraction form
    20,295.48/27,974.28 = 13,578.72/x
  3. Step 3: Cross multiply
    20,295.48x = 27,974.28 × 13,578.72
  4. Step 4: Simplify right side
    20,295.48x = 379,854,915.32
  5. Step 5: Solve for x
    x = 379,854,915.32/20,295.48
  6. Step 6: Final answer
    x = 18,716.23

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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.