Home / 22,187.80-30,619.32-12,116.05

Finding the Fourth Proportional to 22,187.80, 30,619.32 and 12,116.05

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Solution

The fourth proportional to 22,187.80, 30,619.32 and 12,116.05 is: 16,720.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,187.80 : 30,619.32 = 12,116.05 : x
  2. Step 2: Convert to fraction form
    22,187.80/30,619.32 = 12,116.05/x
  3. Step 3: Cross multiply
    22,187.80x = 30,619.32 × 12,116.05
  4. Step 4: Simplify right side
    22,187.80x = 370,985,212.09
  5. Step 5: Solve for x
    x = 370,985,212.09/22,187.80
  6. Step 6: Final answer
    x = 16,720.23

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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.