Home / 20,178.34-27,845.68-11,225.65

Finding the Fourth Proportional to 20,178.34, 27,845.68 and 11,225.65

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Solution

The fourth proportional to 20,178.34, 27,845.68 and 11,225.65 is: 15,491.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.34 : 27,845.68 = 11,225.65 : x
  2. Step 2: Convert to fraction form
    20,178.34/27,845.68 = 11,225.65/x
  3. Step 3: Cross multiply
    20,178.34x = 27,845.68 × 11,225.65
  4. Step 4: Simplify right side
    20,178.34x = 312,585,857.69
  5. Step 5: Solve for x
    x = 312,585,857.69/20,178.34
  6. Step 6: Final answer
    x = 15,491.16

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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.