Home / 19,881.37-27,436.35-10,929.79

Finding the Fourth Proportional to 19,881.37, 27,436.35 and 10,929.79

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Solution

The fourth proportional to 19,881.37, 27,436.35 and 10,929.79 is: 15,083.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,881.37 : 27,436.35 = 10,929.79 : x
  2. Step 2: Convert to fraction form
    19,881.37/27,436.35 = 10,929.79/x
  3. Step 3: Cross multiply
    19,881.37x = 27,436.35 × 10,929.79
  4. Step 4: Simplify right side
    19,881.37x = 299,873,543.87
  5. Step 5: Solve for x
    x = 299,873,543.87/19,881.37
  6. Step 6: Final answer
    x = 15,083.14

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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.