Home / 19,722.65-27,219.51-10,992.20

Finding the Fourth Proportional to 19,722.65, 27,219.51 and 10,992.20

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Solution

The fourth proportional to 19,722.65, 27,219.51 and 10,992.20 is: 15,170.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,722.65 : 27,219.51 = 10,992.20 : x
  2. Step 2: Convert to fraction form
    19,722.65/27,219.51 = 10,992.20/x
  3. Step 3: Cross multiply
    19,722.65x = 27,219.51 × 10,992.20
  4. Step 4: Simplify right side
    19,722.65x = 299,202,161.72
  5. Step 5: Solve for x
    x = 299,202,161.72/19,722.65
  6. Step 6: Final answer
    x = 15,170.49

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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.