Home / 20,764.02-31,122.80-10,904.34

Finding the Fourth Proportional to 20,764.02, 31,122.80 and 10,904.34

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Solution

The fourth proportional to 20,764.02, 31,122.80 and 10,904.34 is: 16,344.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.02 : 31,122.80 = 10,904.34 : x
  2. Step 2: Convert to fraction form
    20,764.02/31,122.80 = 10,904.34/x
  3. Step 3: Cross multiply
    20,764.02x = 31,122.80 × 10,904.34
  4. Step 4: Simplify right side
    20,764.02x = 339,373,592.95
  5. Step 5: Solve for x
    x = 339,373,592.95/20,764.02
  6. Step 6: Final answer
    x = 16,344.31

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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.