Home / 13,811.20-20,711.40-5,041.60

Finding the Fourth Proportional to 13,811.20, 20,711.40 and 5,041.60

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Solution

The fourth proportional to 13,811.20, 20,711.40 and 5,041.60 is: 7,560.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,811.20 : 20,711.40 = 5,041.60 : x
  2. Step 2: Convert to fraction form
    13,811.20/20,711.40 = 5,041.60/x
  3. Step 3: Cross multiply
    13,811.20x = 20,711.40 × 5,041.60
  4. Step 4: Simplify right side
    13,811.20x = 104,418,594.24
  5. Step 5: Solve for x
    x = 104,418,594.24/13,811.20
  6. Step 6: Final answer
    x = 7,560.43

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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.