Home / 20,892.18-31,318.29-7,741.02

Finding the Fourth Proportional to 20,892.18, 31,318.29 and 7,741.02

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Solution

The fourth proportional to 20,892.18, 31,318.29 and 7,741.02 is: 11,604.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,892.18 : 31,318.29 = 7,741.02 : x
  2. Step 2: Convert to fraction form
    20,892.18/31,318.29 = 7,741.02/x
  3. Step 3: Cross multiply
    20,892.18x = 31,318.29 × 7,741.02
  4. Step 4: Simplify right side
    20,892.18x = 242,435,509.26
  5. Step 5: Solve for x
    x = 242,435,509.26/20,892.18
  6. Step 6: Final answer
    x = 11,604.13

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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.