Home / 21,755.03-32,339.14-21,116.54

Finding the Fourth Proportional to 21,755.03, 32,339.14 and 21,116.54

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Solution

The fourth proportional to 21,755.03, 32,339.14 and 21,116.54 is: 31,390.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,755.03 : 32,339.14 = 21,116.54 : x
  2. Step 2: Convert to fraction form
    21,755.03/32,339.14 = 21,116.54/x
  3. Step 3: Cross multiply
    21,755.03x = 32,339.14 × 21,116.54
  4. Step 4: Simplify right side
    21,755.03x = 682,890,771.43
  5. Step 5: Solve for x
    x = 682,890,771.43/21,755.03
  6. Step 6: Final answer
    x = 31,390.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.