Home / 21,101.22-31,655.35-8,627.94

Finding the Fourth Proportional to 21,101.22, 31,655.35 and 8,627.94

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Solution

The fourth proportional to 21,101.22, 31,655.35 and 8,627.94 is: 12,943.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.22 : 31,655.35 = 8,627.94 : x
  2. Step 2: Convert to fraction form
    21,101.22/31,655.35 = 8,627.94/x
  3. Step 3: Cross multiply
    21,101.22x = 31,655.35 × 8,627.94
  4. Step 4: Simplify right side
    21,101.22x = 273,120,460.48
  5. Step 5: Solve for x
    x = 273,120,460.48/21,101.22
  6. Step 6: Final answer
    x = 12,943.35

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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.