Home / 21,231.02-31,851.03-7,190.37

Finding the Fourth Proportional to 21,231.02, 31,851.03 and 7,190.37

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Solution

The fourth proportional to 21,231.02, 31,851.03 and 7,190.37 is: 10,787.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,231.02 : 31,851.03 = 7,190.37 : x
  2. Step 2: Convert to fraction form
    21,231.02/31,851.03 = 7,190.37/x
  3. Step 3: Cross multiply
    21,231.02x = 31,851.03 × 7,190.37
  4. Step 4: Simplify right side
    21,231.02x = 229,020,690.58
  5. Step 5: Solve for x
    x = 229,020,690.58/21,231.02
  6. Step 6: Final answer
    x = 10,787.08

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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.