Home / 19,881.72-27,437.49-10,929.90

Finding the Fourth Proportional to 19,881.72, 27,437.49 and 10,929.90

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Solution

The fourth proportional to 19,881.72, 27,437.49 and 10,929.90 is: 15,083.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,881.72 : 27,437.49 = 10,929.90 : x
  2. Step 2: Convert to fraction form
    19,881.72/27,437.49 = 10,929.90/x
  3. Step 3: Cross multiply
    19,881.72x = 27,437.49 × 10,929.90
  4. Step 4: Simplify right side
    19,881.72x = 299,889,021.95
  5. Step 5: Solve for x
    x = 299,889,021.95/19,881.72
  6. Step 6: Final answer
    x = 15,083.66

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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.