Home / 13,370.20-18,452.13-7,403.79

Finding the Fourth Proportional to 13,370.20, 18,452.13 and 7,403.79

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Solution

The fourth proportional to 13,370.20, 18,452.13 and 7,403.79 is: 10,217.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,370.20 : 18,452.13 = 7,403.79 : x
  2. Step 2: Convert to fraction form
    13,370.20/18,452.13 = 7,403.79/x
  3. Step 3: Cross multiply
    13,370.20x = 18,452.13 × 7,403.79
  4. Step 4: Simplify right side
    13,370.20x = 136,615,731.88
  5. Step 5: Solve for x
    x = 136,615,731.88/13,370.20
  6. Step 6: Final answer
    x = 10,217.93

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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.