Home / 13,135.60-18,126.41-7,469.58

Finding the Fourth Proportional to 13,135.60, 18,126.41 and 7,469.58

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Solution

The fourth proportional to 13,135.60, 18,126.41 and 7,469.58 is: 10,307.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.60 : 18,126.41 = 7,469.58 : x
  2. Step 2: Convert to fraction form
    13,135.60/18,126.41 = 7,469.58/x
  3. Step 3: Cross multiply
    13,135.60x = 18,126.41 × 7,469.58
  4. Step 4: Simplify right side
    13,135.60x = 135,396,669.61
  5. Step 5: Solve for x
    x = 135,396,669.61/13,135.60
  6. Step 6: Final answer
    x = 10,307.61

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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.