Home / 20,153.82-27,812.66-12,095.40

Finding the Fourth Proportional to 20,153.82, 27,812.66 and 12,095.40

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Solution

The fourth proportional to 20,153.82, 27,812.66 and 12,095.40 is: 16,691.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,153.82 : 27,812.66 = 12,095.40 : x
  2. Step 2: Convert to fraction form
    20,153.82/27,812.66 = 12,095.40/x
  3. Step 3: Cross multiply
    20,153.82x = 27,812.66 × 12,095.40
  4. Step 4: Simplify right side
    20,153.82x = 336,405,187.29
  5. Step 5: Solve for x
    x = 336,405,187.29/20,153.82
  6. Step 6: Final answer
    x = 16,691.88

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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.