Home / 21,202.02-31,815.54-8,065.44

Finding the Fourth Proportional to 21,202.02, 31,815.54 and 8,065.44

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Solution

The fourth proportional to 21,202.02, 31,815.54 and 8,065.44 is: 12,102.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,202.02 : 31,815.54 = 8,065.44 : x
  2. Step 2: Convert to fraction form
    21,202.02/31,815.54 = 8,065.44/x
  3. Step 3: Cross multiply
    21,202.02x = 31,815.54 × 8,065.44
  4. Step 4: Simplify right side
    21,202.02x = 256,606,328.94
  5. Step 5: Solve for x
    x = 256,606,328.94/21,202.02
  6. Step 6: Final answer
    x = 12,102.92

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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.