Home / 22,187.15-30,617.87-12,115.32

Finding the Fourth Proportional to 22,187.15, 30,617.87 and 12,115.32

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Solution

The fourth proportional to 22,187.15, 30,617.87 and 12,115.32 is: 16,718.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,187.15 : 30,617.87 = 12,115.32 : x
  2. Step 2: Convert to fraction form
    22,187.15/30,617.87 = 12,115.32/x
  3. Step 3: Cross multiply
    22,187.15x = 30,617.87 × 12,115.32
  4. Step 4: Simplify right side
    22,187.15x = 370,945,232.19
  5. Step 5: Solve for x
    x = 370,945,232.19/22,187.15
  6. Step 6: Final answer
    x = 16,718.92

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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.