Home / 15,209.06-20,998.38-13,612.94

Finding the Fourth Proportional to 15,209.06, 20,998.38 and 13,612.94

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Solution

The fourth proportional to 15,209.06, 20,998.38 and 13,612.94 is: 18,794.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,209.06 : 20,998.38 = 13,612.94 : x
  2. Step 2: Convert to fraction form
    15,209.06/20,998.38 = 13,612.94/x
  3. Step 3: Cross multiply
    15,209.06x = 20,998.38 × 13,612.94
  4. Step 4: Simplify right side
    15,209.06x = 285,849,687.04
  5. Step 5: Solve for x
    x = 285,849,687.04/15,209.06
  6. Step 6: Final answer
    x = 18,794.70

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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.