Home / 20,422.85-28,173.36-17,730.41

Finding the Fourth Proportional to 20,422.85, 28,173.36 and 17,730.41

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Solution

The fourth proportional to 20,422.85, 28,173.36 and 17,730.41 is: 24,459.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,422.85 : 28,173.36 = 17,730.41 : x
  2. Step 2: Convert to fraction form
    20,422.85/28,173.36 = 17,730.41/x
  3. Step 3: Cross multiply
    20,422.85x = 28,173.36 × 17,730.41
  4. Step 4: Simplify right side
    20,422.85x = 499,525,083.01
  5. Step 5: Solve for x
    x = 499,525,083.01/20,422.85
  6. Step 6: Final answer
    x = 24,459.13

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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.