Home / 10,222.81-15,330.13-3,981.96

Finding the Fourth Proportional to 10,222.81, 15,330.13 and 3,981.96

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Solution

The fourth proportional to 10,222.81, 15,330.13 and 3,981.96 is: 5,971.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,222.81 : 15,330.13 = 3,981.96 : x
  2. Step 2: Convert to fraction form
    10,222.81/15,330.13 = 3,981.96/x
  3. Step 3: Cross multiply
    10,222.81x = 15,330.13 × 3,981.96
  4. Step 4: Simplify right side
    10,222.81x = 61,043,954.50
  5. Step 5: Solve for x
    x = 61,043,954.50/10,222.81
  6. Step 6: Final answer
    x = 5,971.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.