Home / 10,121.30-15,182.12-3,881.67

Finding the Fourth Proportional to 10,121.30, 15,182.12 and 3,881.67

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Solution

The fourth proportional to 10,121.30, 15,182.12 and 3,881.67 is: 5,822.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.30 : 15,182.12 = 3,881.67 : x
  2. Step 2: Convert to fraction form
    10,121.30/15,182.12 = 3,881.67/x
  3. Step 3: Cross multiply
    10,121.30x = 15,182.12 × 3,881.67
  4. Step 4: Simplify right side
    10,121.30x = 58,931,932.51
  5. Step 5: Solve for x
    x = 58,931,932.51/10,121.30
  6. Step 6: Final answer
    x = 5,822.57

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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.