Home / 22,185.78-30,617.62-12,115.16

Finding the Fourth Proportional to 22,185.78, 30,617.62 and 12,115.16

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Solution

The fourth proportional to 22,185.78, 30,617.62 and 12,115.16 is: 16,719.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,185.78 : 30,617.62 = 12,115.16 : x
  2. Step 2: Convert to fraction form
    22,185.78/30,617.62 = 12,115.16/x
  3. Step 3: Cross multiply
    22,185.78x = 30,617.62 × 12,115.16
  4. Step 4: Simplify right side
    22,185.78x = 370,937,365.12
  5. Step 5: Solve for x
    x = 370,937,365.12/22,185.78
  6. Step 6: Final answer
    x = 16,719.60

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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.