Home / 20,975.02-31,455.03-6,932.45

Finding the Fourth Proportional to 20,975.02, 31,455.03 and 6,932.45

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Solution

The fourth proportional to 20,975.02, 31,455.03 and 6,932.45 is: 10,396.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,975.02 : 31,455.03 = 6,932.45 : x
  2. Step 2: Convert to fraction form
    20,975.02/31,455.03 = 6,932.45/x
  3. Step 3: Cross multiply
    20,975.02x = 31,455.03 × 6,932.45
  4. Step 4: Simplify right side
    20,975.02x = 218,060,527.36
  5. Step 5: Solve for x
    x = 218,060,527.36/20,975.02
  6. Step 6: Final answer
    x = 10,396.20

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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.