Home / 13,318.06-18,377.78-7,650.96

Finding the Fourth Proportional to 13,318.06, 18,377.78 and 7,650.96

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Solution

The fourth proportional to 13,318.06, 18,377.78 and 7,650.96 is: 10,557.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.06 : 18,377.78 = 7,650.96 : x
  2. Step 2: Convert to fraction form
    13,318.06/18,377.78 = 7,650.96/x
  3. Step 3: Cross multiply
    13,318.06x = 18,377.78 × 7,650.96
  4. Step 4: Simplify right side
    13,318.06x = 140,607,659.67
  5. Step 5: Solve for x
    x = 140,607,659.67/13,318.06
  6. Step 6: Final answer
    x = 10,557.67

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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.