Home / 22,190.18-30,621.54-12,118.60

Finding the Fourth Proportional to 22,190.18, 30,621.54 and 12,118.60

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Solution

The fourth proportional to 22,190.18, 30,621.54 and 12,118.60 is: 16,723.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,190.18 : 30,621.54 = 12,118.60 : x
  2. Step 2: Convert to fraction form
    22,190.18/30,621.54 = 12,118.60/x
  3. Step 3: Cross multiply
    22,190.18x = 30,621.54 × 12,118.60
  4. Step 4: Simplify right side
    22,190.18x = 371,090,278.37
  5. Step 5: Solve for x
    x = 371,090,278.37/22,190.18
  6. Step 6: Final answer
    x = 16,723.18

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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.