Home / 21,019.02-31,537.89-11,021.46

Finding the Fourth Proportional to 21,019.02, 31,537.89 and 11,021.46

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Solution

The fourth proportional to 21,019.02, 31,537.89 and 11,021.46 is: 16,537.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,019.02 : 31,537.89 = 11,021.46 : x
  2. Step 2: Convert to fraction form
    21,019.02/31,537.89 = 11,021.46/x
  3. Step 3: Cross multiply
    21,019.02x = 31,537.89 × 11,021.46
  4. Step 4: Simplify right side
    21,019.02x = 347,593,593.12
  5. Step 5: Solve for x
    x = 347,593,593.12/21,019.02
  6. Step 6: Final answer
    x = 16,537.10

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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.