Home / 20,218.72-27,869.52-13,491.04

Finding the Fourth Proportional to 20,218.72, 27,869.52 and 13,491.04

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Solution

The fourth proportional to 20,218.72, 27,869.52 and 13,491.04 is: 18,596.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218.72 : 27,869.52 = 13,491.04 : x
  2. Step 2: Convert to fraction form
    20,218.72/27,869.52 = 13,491.04/x
  3. Step 3: Cross multiply
    20,218.72x = 27,869.52 × 13,491.04
  4. Step 4: Simplify right side
    20,218.72x = 375,988,809.10
  5. Step 5: Solve for x
    x = 375,988,809.10/20,218.72
  6. Step 6: Final answer
    x = 18,596.07

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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.