Home / 13,197.78-18,202.32-10,221.66

Finding the Fourth Proportional to 13,197.78, 18,202.32 and 10,221.66

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Solution

The fourth proportional to 13,197.78, 18,202.32 and 10,221.66 is: 14,097.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,197.78 : 18,202.32 = 10,221.66 : x
  2. Step 2: Convert to fraction form
    13,197.78/18,202.32 = 10,221.66/x
  3. Step 3: Cross multiply
    13,197.78x = 18,202.32 × 10,221.66
  4. Step 4: Simplify right side
    13,197.78x = 186,057,926.25
  5. Step 5: Solve for x
    x = 186,057,926.25/13,197.78
  6. Step 6: Final answer
    x = 14,097.67

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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.