Home / 20,013.84-27,618.72-12,940.08

Finding the Fourth Proportional to 20,013.84, 27,618.72 and 12,940.08

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Solution

The fourth proportional to 20,013.84, 27,618.72 and 12,940.08 is: 17,857.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,013.84 : 27,618.72 = 12,940.08 : x
  2. Step 2: Convert to fraction form
    20,013.84/27,618.72 = 12,940.08/x
  3. Step 3: Cross multiply
    20,013.84x = 27,618.72 × 12,940.08
  4. Step 4: Simplify right side
    20,013.84x = 357,388,446.30
  5. Step 5: Solve for x
    x = 357,388,446.30/20,013.84
  6. Step 6: Final answer
    x = 17,857.07

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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.