Home / 22,420.40-30,936.94-12,348.80

Finding the Fourth Proportional to 22,420.40, 30,936.94 and 12,348.80

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Solution

The fourth proportional to 22,420.40, 30,936.94 and 12,348.80 is: 17,039.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,420.40 : 30,936.94 = 12,348.80 : x
  2. Step 2: Convert to fraction form
    22,420.40/30,936.94 = 12,348.80/x
  3. Step 3: Cross multiply
    22,420.40x = 30,936.94 × 12,348.80
  4. Step 4: Simplify right side
    22,420.40x = 382,034,189.15
  5. Step 5: Solve for x
    x = 382,034,189.15/22,420.40
  6. Step 6: Final answer
    x = 17,039.58

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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.