Home / 13,720.83-20,581.23-4,955.76

Finding the Fourth Proportional to 13,720.83, 20,581.23 and 4,955.76

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Solution

The fourth proportional to 13,720.83, 20,581.23 and 4,955.76 is: 7,433.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.83 : 20,581.23 = 4,955.76 : x
  2. Step 2: Convert to fraction form
    13,720.83/20,581.23 = 4,955.76/x
  3. Step 3: Cross multiply
    13,720.83x = 20,581.23 × 4,955.76
  4. Step 4: Simplify right side
    13,720.83x = 101,995,636.38
  5. Step 5: Solve for x
    x = 101,995,636.38/13,720.83
  6. Step 6: Final answer
    x = 7,433.63

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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.