Home / 28,063.80-38,717.87-21,605.41

Finding the Fourth Proportional to 28,063.80, 38,717.87 and 21,605.41

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Solution

The fourth proportional to 28,063.80, 38,717.87 and 21,605.41 is: 29,807.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,063.80 : 38,717.87 = 21,605.41 : x
  2. Step 2: Convert to fraction form
    28,063.80/38,717.87 = 21,605.41/x
  3. Step 3: Cross multiply
    28,063.80x = 38,717.87 × 21,605.41
  4. Step 4: Simplify right side
    28,063.80x = 836,515,469.45
  5. Step 5: Solve for x
    x = 836,515,469.45/28,063.80
  6. Step 6: Final answer
    x = 29,807.63

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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.