Home / 20,420.29-30,656.36-17,361.73

Finding the Fourth Proportional to 20,420.29, 30,656.36 and 17,361.73

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Solution

The fourth proportional to 20,420.29, 30,656.36 and 17,361.73 is: 26,064.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,420.29 : 30,656.36 = 17,361.73 : x
  2. Step 2: Convert to fraction form
    20,420.29/30,656.36 = 17,361.73/x
  3. Step 3: Cross multiply
    20,420.29x = 30,656.36 × 17,361.73
  4. Step 4: Simplify right side
    20,420.29x = 532,247,445.10
  5. Step 5: Solve for x
    x = 532,247,445.10/20,420.29
  6. Step 6: Final answer
    x = 26,064.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.