Home / 27,828.09-38,401.92-15,889.10

Finding the Fourth Proportional to 27,828.09, 38,401.92 and 15,889.10

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Solution

The fourth proportional to 27,828.09, 38,401.92 and 15,889.10 is: 21,926.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,828.09 : 38,401.92 = 15,889.10 : x
  2. Step 2: Convert to fraction form
    27,828.09/38,401.92 = 15,889.10/x
  3. Step 3: Cross multiply
    27,828.09x = 38,401.92 × 15,889.10
  4. Step 4: Simplify right side
    27,828.09x = 610,171,755.06
  5. Step 5: Solve for x
    x = 610,171,755.06/27,828.09
  6. Step 6: Final answer
    x = 21,926.47

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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.