Home / 13,419.24-18,518.40-7,451.97

Finding the Fourth Proportional to 13,419.24, 18,518.40 and 7,451.97

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Solution

The fourth proportional to 13,419.24, 18,518.40 and 7,451.97 is: 10,283.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.24 : 18,518.40 = 7,451.97 : x
  2. Step 2: Convert to fraction form
    13,419.24/18,518.40 = 7,451.97/x
  3. Step 3: Cross multiply
    13,419.24x = 18,518.40 × 7,451.97
  4. Step 4: Simplify right side
    13,419.24x = 137,998,561.25
  5. Step 5: Solve for x
    x = 137,998,561.25/13,419.24
  6. Step 6: Final answer
    x = 10,283.63

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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.