Home / 27,747.84-38,291.85-15,811.31

Finding the Fourth Proportional to 27,747.84, 38,291.85 and 15,811.31

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Solution

The fourth proportional to 27,747.84, 38,291.85 and 15,811.31 is: 21,819.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,747.84 : 38,291.85 = 15,811.31 : x
  2. Step 2: Convert to fraction form
    27,747.84/38,291.85 = 15,811.31/x
  3. Step 3: Cross multiply
    27,747.84x = 38,291.85 × 15,811.31
  4. Step 4: Simplify right side
    27,747.84x = 605,444,119.36
  5. Step 5: Solve for x
    x = 605,444,119.36/27,747.84
  6. Step 6: Final answer
    x = 21,819.50

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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.