Home / 20,195.84-27,811.45-15,712.04

Finding the Fourth Proportional to 20,195.84, 27,811.45 and 15,712.04

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Solution

The fourth proportional to 20,195.84, 27,811.45 and 15,712.04 is: 21,636.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,195.84 : 27,811.45 = 15,712.04 : x
  2. Step 2: Convert to fraction form
    20,195.84/27,811.45 = 15,712.04/x
  3. Step 3: Cross multiply
    20,195.84x = 27,811.45 × 15,712.04
  4. Step 4: Simplify right side
    20,195.84x = 436,974,614.86
  5. Step 5: Solve for x
    x = 436,974,614.86/20,195.84
  6. Step 6: Final answer
    x = 21,636.86

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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.