Home / 20,981.10-31,464.32-6,186.09

Finding the Fourth Proportional to 20,981.10, 31,464.32 and 6,186.09

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Solution

The fourth proportional to 20,981.10, 31,464.32 and 6,186.09 is: 9,276.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,981.10 : 31,464.32 = 6,186.09 : x
  2. Step 2: Convert to fraction form
    20,981.10/31,464.32 = 6,186.09/x
  3. Step 3: Cross multiply
    20,981.10x = 31,464.32 × 6,186.09
  4. Step 4: Simplify right side
    20,981.10x = 194,641,084.38
  5. Step 5: Solve for x
    x = 194,641,084.38/20,981.10
  6. Step 6: Final answer
    x = 9,276.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.