Home / 20,904.66-31,361.88-6,113.82

Finding the Fourth Proportional to 20,904.66, 31,361.88 and 6,113.82

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Solution

The fourth proportional to 20,904.66, 31,361.88 and 6,113.82 is: 9,172.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.66 : 31,361.88 = 6,113.82 : x
  2. Step 2: Convert to fraction form
    20,904.66/31,361.88 = 6,113.82/x
  3. Step 3: Cross multiply
    20,904.66x = 31,361.88 × 6,113.82
  4. Step 4: Simplify right side
    20,904.66x = 191,740,889.18
  5. Step 5: Solve for x
    x = 191,740,889.18/20,904.66
  6. Step 6: Final answer
    x = 9,172.16

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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.