Home / 20,148.28-27,809.14-11,198.92

Finding the Fourth Proportional to 20,148.28, 27,809.14 and 11,198.92

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Solution

The fourth proportional to 20,148.28, 27,809.14 and 11,198.92 is: 15,457.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.28 : 27,809.14 = 11,198.92 : x
  2. Step 2: Convert to fraction form
    20,148.28/27,809.14 = 11,198.92/x
  3. Step 3: Cross multiply
    20,148.28x = 27,809.14 × 11,198.92
  4. Step 4: Simplify right side
    20,148.28x = 311,432,334.13
  5. Step 5: Solve for x
    x = 311,432,334.13/20,148.28
  6. Step 6: Final answer
    x = 15,457.02

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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.