Home / 22,720.96-31,354.86-12,649.84

Finding the Fourth Proportional to 22,720.96, 31,354.86 and 12,649.84

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Solution

The fourth proportional to 22,720.96, 31,354.86 and 12,649.84 is: 17,456.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,720.96 : 31,354.86 = 12,649.84 : x
  2. Step 2: Convert to fraction form
    22,720.96/31,354.86 = 12,649.84/x
  3. Step 3: Cross multiply
    22,720.96x = 31,354.86 × 12,649.84
  4. Step 4: Simplify right side
    22,720.96x = 396,633,962.22
  5. Step 5: Solve for x
    x = 396,633,962.22/22,720.96
  6. Step 6: Final answer
    x = 17,456.74

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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.