Home / 13,419.68-18,517.77-7,450.70

Finding the Fourth Proportional to 13,419.68, 18,517.77 and 7,450.70

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Solution

The fourth proportional to 13,419.68, 18,517.77 and 7,450.70 is: 10,281.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.68 : 18,517.77 = 7,450.70 : x
  2. Step 2: Convert to fraction form
    13,419.68/18,517.77 = 7,450.70/x
  3. Step 3: Cross multiply
    13,419.68x = 18,517.77 × 7,450.70
  4. Step 4: Simplify right side
    13,419.68x = 137,970,256.35
  5. Step 5: Solve for x
    x = 137,970,256.35/13,419.68
  6. Step 6: Final answer
    x = 10,281.19

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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.