Home / 13,419.79-18,519.24-7,370.15

Finding the Fourth Proportional to 13,419.79, 18,519.24 and 7,370.15

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Solution

The fourth proportional to 13,419.79, 18,519.24 and 7,370.15 is: 10,170.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,419.79 : 18,519.24 = 7,370.15 : x
  2. Step 2: Convert to fraction form
    13,419.79/18,519.24 = 7,370.15/x
  3. Step 3: Cross multiply
    13,419.79x = 18,519.24 × 7,370.15
  4. Step 4: Simplify right side
    13,419.79x = 136,489,576.69
  5. Step 5: Solve for x
    x = 136,489,576.69/13,419.79
  6. Step 6: Final answer
    x = 10,170.77

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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.