Home / 20,343.26-28,073.31-13,256.30

Finding the Fourth Proportional to 20,343.26, 28,073.31 and 13,256.30

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Solution

The fourth proportional to 20,343.26, 28,073.31 and 13,256.30 is: 18,293.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,343.26 : 28,073.31 = 13,256.30 : x
  2. Step 2: Convert to fraction form
    20,343.26/28,073.31 = 13,256.30/x
  3. Step 3: Cross multiply
    20,343.26x = 28,073.31 × 13,256.30
  4. Step 4: Simplify right side
    20,343.26x = 372,148,219.35
  5. Step 5: Solve for x
    x = 372,148,219.35/20,343.26
  6. Step 6: Final answer
    x = 18,293.44

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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.