Home / 13,419.20-18,518.22-7,450.52

Finding the Fourth Proportional to 13,419.20, 18,518.22 and 7,450.52

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Solution

The fourth proportional to 13,419.20, 18,518.22 and 7,450.52 is: 10,281.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.20 : 18,518.22 = 7,450.52 : x
  2. Step 2: Convert to fraction form
    13,419.20/18,518.22 = 7,450.52/x
  3. Step 3: Cross multiply
    13,419.20x = 18,518.22 × 7,450.52
  4. Step 4: Simplify right side
    13,419.20x = 137,970,275.88
  5. Step 5: Solve for x
    x = 137,970,275.88/13,419.20
  6. Step 6: Final answer
    x = 10,281.56

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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.