Home / 20,731.02-31,096.41-5,148.64

Finding the Fourth Proportional to 20,731.02, 31,096.41 and 5,148.64

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Solution

The fourth proportional to 20,731.02, 31,096.41 and 5,148.64 is: 7,722.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731.02 : 31,096.41 = 5,148.64 : x
  2. Step 2: Convert to fraction form
    20,731.02/31,096.41 = 5,148.64/x
  3. Step 3: Cross multiply
    20,731.02x = 31,096.41 × 5,148.64
  4. Step 4: Simplify right side
    20,731.02x = 160,104,220.38
  5. Step 5: Solve for x
    x = 160,104,220.38/20,731.02
  6. Step 6: Final answer
    x = 7,722.93

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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.