Home / 13,134.91-18,126.21-7,469.52

Finding the Fourth Proportional to 13,134.91, 18,126.21 and 7,469.52

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Solution

The fourth proportional to 13,134.91, 18,126.21 and 7,469.52 is: 10,307.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,134.91 : 18,126.21 = 7,469.52 : x
  2. Step 2: Convert to fraction form
    13,134.91/18,126.21 = 7,469.52/x
  3. Step 3: Cross multiply
    13,134.91x = 18,126.21 × 7,469.52
  4. Step 4: Simplify right side
    13,134.91x = 135,393,985.13
  5. Step 5: Solve for x
    x = 135,393,985.13/13,134.91
  6. Step 6: Final answer
    x = 10,307.95

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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.