Home / 22,291.21-30,761.90-12,220.03

Finding the Fourth Proportional to 22,291.21, 30,761.90 and 12,220.03

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Solution

The fourth proportional to 22,291.21, 30,761.90 and 12,220.03 is: 16,863.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,291.21 : 30,761.90 = 12,220.03 : x
  2. Step 2: Convert to fraction form
    22,291.21/30,761.90 = 12,220.03/x
  3. Step 3: Cross multiply
    22,291.21x = 30,761.90 × 12,220.03
  4. Step 4: Simplify right side
    22,291.21x = 375,911,340.86
  5. Step 5: Solve for x
    x = 375,911,340.86/22,291.21
  6. Step 6: Final answer
    x = 16,863.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.