Home / 19,942.81-29,915.80-6,615.32

Finding the Fourth Proportional to 19,942.81, 29,915.80 and 6,615.32

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Solution

The fourth proportional to 19,942.81, 29,915.80 and 6,615.32 is: 9,923.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,942.81 : 29,915.80 = 6,615.32 : x
  2. Step 2: Convert to fraction form
    19,942.81/29,915.80 = 6,615.32/x
  3. Step 3: Cross multiply
    19,942.81x = 29,915.80 × 6,615.32
  4. Step 4: Simplify right side
    19,942.81x = 197,902,592.22
  5. Step 5: Solve for x
    x = 197,902,592.22/19,942.81
  6. Step 6: Final answer
    x = 9,923.51

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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.