Home / 19,872.68-27,424.28-10,920.75

Finding the Fourth Proportional to 19,872.68, 27,424.28 and 10,920.75

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Solution

The fourth proportional to 19,872.68, 27,424.28 and 10,920.75 is: 15,070.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,872.68 : 27,424.28 = 10,920.75 : x
  2. Step 2: Convert to fraction form
    19,872.68/27,424.28 = 10,920.75/x
  3. Step 3: Cross multiply
    19,872.68x = 27,424.28 × 10,920.75
  4. Step 4: Simplify right side
    19,872.68x = 299,493,651.21
  5. Step 5: Solve for x
    x = 299,493,651.21/19,872.68
  6. Step 6: Final answer
    x = 15,070.63

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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.