Home / 13,420.36-20,130.54-3,560.41

Finding the Fourth Proportional to 13,420.36, 20,130.54 and 3,560.41

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Solution

The fourth proportional to 13,420.36, 20,130.54 and 3,560.41 is: 5,340.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.36 : 20,130.54 = 3,560.41 : x
  2. Step 2: Convert to fraction form
    13,420.36/20,130.54 = 3,560.41/x
  3. Step 3: Cross multiply
    13,420.36x = 20,130.54 × 3,560.41
  4. Step 4: Simplify right side
    13,420.36x = 71,672,975.92
  5. Step 5: Solve for x
    x = 71,672,975.92/13,420.36
  6. Step 6: Final answer
    x = 5,340.62

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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.