Home / 13,420.62-20,122.98-4,057.80

Finding the Fourth Proportional to 13,420.62, 20,122.98 and 4,057.80

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Solution

The fourth proportional to 13,420.62, 20,122.98 and 4,057.80 is: 6,084.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.62 : 20,122.98 = 4,057.80 : x
  2. Step 2: Convert to fraction form
    13,420.62/20,122.98 = 4,057.80/x
  3. Step 3: Cross multiply
    13,420.62x = 20,122.98 × 4,057.80
  4. Step 4: Simplify right side
    13,420.62x = 81,655,028.24
  5. Step 5: Solve for x
    x = 81,655,028.24/13,420.62
  6. Step 6: Final answer
    x = 6,084.30

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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.