Home / 27,791.79-38,353.28-15,217.35

Finding the Fourth Proportional to 27,791.79, 38,353.28 and 15,217.35

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Solution

The fourth proportional to 27,791.79, 38,353.28 and 15,217.35 is: 21,000.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,791.79 : 38,353.28 = 15,217.35 : x
  2. Step 2: Convert to fraction form
    27,791.79/38,353.28 = 15,217.35/x
  3. Step 3: Cross multiply
    27,791.79x = 38,353.28 × 15,217.35
  4. Step 4: Simplify right side
    27,791.79x = 583,635,209.32
  5. Step 5: Solve for x
    x = 583,635,209.32/27,791.79
  6. Step 6: Final answer
    x = 21,000.27

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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.