Home / 13,236.37-18,264.68-7,856.89

Finding the Fourth Proportional to 13,236.37, 18,264.68 and 7,856.89

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Solution

The fourth proportional to 13,236.37, 18,264.68 and 7,856.89 is: 10,841.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,236.37 : 18,264.68 = 7,856.89 : x
  2. Step 2: Convert to fraction form
    13,236.37/18,264.68 = 7,856.89/x
  3. Step 3: Cross multiply
    13,236.37x = 18,264.68 × 7,856.89
  4. Step 4: Simplify right side
    13,236.37x = 143,503,542.36
  5. Step 5: Solve for x
    x = 143,503,542.36/13,236.37
  6. Step 6: Final answer
    x = 10,841.61

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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.