Home / 27,791.04-38,351.64-15,215.76

Finding the Fourth Proportional to 27,791.04, 38,351.64 and 15,215.76

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Solution

The fourth proportional to 27,791.04, 38,351.64 and 15,215.76 is: 20,997.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,791.04 : 38,351.64 = 15,215.76 : x
  2. Step 2: Convert to fraction form
    27,791.04/38,351.64 = 15,215.76/x
  3. Step 3: Cross multiply
    27,791.04x = 38,351.64 × 15,215.76
  4. Step 4: Simplify right side
    27,791.04x = 583,549,349.85
  5. Step 5: Solve for x
    x = 583,549,349.85/27,791.04
  6. Step 6: Final answer
    x = 20,997.75

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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.