Home / 22,209.72-30,649.44-12,780.12

Finding the Fourth Proportional to 22,209.72, 30,649.44 and 12,780.12

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Solution

The fourth proportional to 22,209.72, 30,649.44 and 12,780.12 is: 17,636.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,209.72 : 30,649.44 = 12,780.12 : x
  2. Step 2: Convert to fraction form
    22,209.72/30,649.44 = 12,780.12/x
  3. Step 3: Cross multiply
    22,209.72x = 30,649.44 × 12,780.12
  4. Step 4: Simplify right side
    22,209.72x = 391,703,521.13
  5. Step 5: Solve for x
    x = 391,703,521.13/22,209.72
  6. Step 6: Final answer
    x = 17,636.58

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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.