Home / 21,072.15-31,624.02-9,982.04

Finding the Fourth Proportional to 21,072.15, 31,624.02 and 9,982.04

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Solution

The fourth proportional to 21,072.15, 31,624.02 and 9,982.04 is: 14,980.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,072.15 : 31,624.02 = 9,982.04 : x
  2. Step 2: Convert to fraction form
    21,072.15/31,624.02 = 9,982.04/x
  3. Step 3: Cross multiply
    21,072.15x = 31,624.02 × 9,982.04
  4. Step 4: Simplify right side
    21,072.15x = 315,672,074.48
  5. Step 5: Solve for x
    x = 315,672,074.48/21,072.15
  6. Step 6: Final answer
    x = 14,980.53

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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.