Home / 13,134.99-18,126.20-7,469.74

Finding the Fourth Proportional to 13,134.99, 18,126.20 and 7,469.74

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Solution

The fourth proportional to 13,134.99, 18,126.20 and 7,469.74 is: 10,308.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134.99 : 18,126.20 = 7,469.74 : x
  2. Step 2: Convert to fraction form
    13,134.99/18,126.20 = 7,469.74/x
  3. Step 3: Cross multiply
    13,134.99x = 18,126.20 × 7,469.74
  4. Step 4: Simplify right side
    13,134.99x = 135,397,963.84
  5. Step 5: Solve for x
    x = 135,397,963.84/13,134.99
  6. Step 6: Final answer
    x = 10,308.19

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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.