Home / 19,872.06-27,424.08-10,920.39

Finding the Fourth Proportional to 19,872.06, 27,424.08 and 10,920.39

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Solution

The fourth proportional to 19,872.06, 27,424.08 and 10,920.39 is: 15,070.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,872.06 : 27,424.08 = 10,920.39 : x
  2. Step 2: Convert to fraction form
    19,872.06/27,424.08 = 10,920.39/x
  3. Step 3: Cross multiply
    19,872.06x = 27,424.08 × 10,920.39
  4. Step 4: Simplify right side
    19,872.06x = 299,481,648.99
  5. Step 5: Solve for x
    x = 299,481,648.99/19,872.06
  6. Step 6: Final answer
    x = 15,070.49

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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.