Home / 27,881.97-38,477.79-15,135.67

Finding the Fourth Proportional to 27,881.97, 38,477.79 and 15,135.67

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Solution

The fourth proportional to 27,881.97, 38,477.79 and 15,135.67 is: 20,887.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,881.97 : 38,477.79 = 15,135.67 : x
  2. Step 2: Convert to fraction form
    27,881.97/38,477.79 = 15,135.67/x
  3. Step 3: Cross multiply
    27,881.97x = 38,477.79 × 15,135.67
  4. Step 4: Simplify right side
    27,881.97x = 582,387,131.77
  5. Step 5: Solve for x
    x = 582,387,131.77/27,881.97
  6. Step 6: Final answer
    x = 20,887.59

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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.