Home / 20,912.16-28,839.24-16,677.30

Finding the Fourth Proportional to 20,912.16, 28,839.24 and 16,677.30

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Solution

The fourth proportional to 20,912.16, 28,839.24 and 16,677.30 is: 22,999.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,912.16 : 28,839.24 = 16,677.30 : x
  2. Step 2: Convert to fraction form
    20,912.16/28,839.24 = 16,677.30/x
  3. Step 3: Cross multiply
    20,912.16x = 28,839.24 × 16,677.30
  4. Step 4: Simplify right side
    20,912.16x = 480,960,657.25
  5. Step 5: Solve for x
    x = 480,960,657.25/20,912.16
  6. Step 6: Final answer
    x = 22,999.09

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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.