Home / 19,720.28-27,213.78-10,767.76

Finding the Fourth Proportional to 19,720.28, 27,213.78 and 10,767.76

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Solution

The fourth proportional to 19,720.28, 27,213.78 and 10,767.76 is: 14,859.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,720.28 : 27,213.78 = 10,767.76 : x
  2. Step 2: Convert to fraction form
    19,720.28/27,213.78 = 10,767.76/x
  3. Step 3: Cross multiply
    19,720.28x = 27,213.78 × 10,767.76
  4. Step 4: Simplify right side
    19,720.28x = 293,031,451.73
  5. Step 5: Solve for x
    x = 293,031,451.73/19,720.28
  6. Step 6: Final answer
    x = 14,859.40

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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.