Home / 20,908.44-31,362.51-5,113.53

Finding the Fourth Proportional to 20,908.44, 31,362.51 and 5,113.53

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Solution

The fourth proportional to 20,908.44, 31,362.51 and 5,113.53 is: 7,670.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.44 : 31,362.51 = 5,113.53 : x
  2. Step 2: Convert to fraction form
    20,908.44/31,362.51 = 5,113.53/x
  3. Step 3: Cross multiply
    20,908.44x = 31,362.51 × 5,113.53
  4. Step 4: Simplify right side
    20,908.44x = 160,373,135.76
  5. Step 5: Solve for x
    x = 160,373,135.76/20,908.44
  6. Step 6: Final answer
    x = 7,670.26

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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.