Home / 20,504.08-28,300.22-13,426.38

Finding the Fourth Proportional to 20,504.08, 28,300.22 and 13,426.38

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Solution

The fourth proportional to 20,504.08, 28,300.22 and 13,426.38 is: 18,531.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,504.08 : 28,300.22 = 13,426.38 : x
  2. Step 2: Convert to fraction form
    20,504.08/28,300.22 = 13,426.38/x
  3. Step 3: Cross multiply
    20,504.08x = 28,300.22 × 13,426.38
  4. Step 4: Simplify right side
    20,504.08x = 379,969,507.80
  5. Step 5: Solve for x
    x = 379,969,507.80/20,504.08
  6. Step 6: Final answer
    x = 18,531.41

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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.