Home / 13,420.22-18,517.93-7,451.94

Finding the Fourth Proportional to 13,420.22, 18,517.93 and 7,451.94

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Solution

The fourth proportional to 13,420.22, 18,517.93 and 7,451.94 is: 10,282.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,420.22 : 18,517.93 = 7,451.94 : x
  2. Step 2: Convert to fraction form
    13,420.22/18,517.93 = 7,451.94/x
  3. Step 3: Cross multiply
    13,420.22x = 18,517.93 × 7,451.94
  4. Step 4: Simplify right side
    13,420.22x = 137,994,503.28
  5. Step 5: Solve for x
    x = 137,994,503.28/13,420.22
  6. Step 6: Final answer
    x = 10,282.58

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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.