Home / 27,781.52-38,339.33-15,682.55

Finding the Fourth Proportional to 27,781.52, 38,339.33 and 15,682.55

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Solution

The fourth proportional to 27,781.52, 38,339.33 and 15,682.55 is: 21,642.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,781.52 : 38,339.33 = 15,682.55 : x
  2. Step 2: Convert to fraction form
    27,781.52/38,339.33 = 15,682.55/x
  3. Step 3: Cross multiply
    27,781.52x = 38,339.33 × 15,682.55
  4. Step 4: Simplify right side
    27,781.52x = 601,258,189.58
  5. Step 5: Solve for x
    x = 601,258,189.58/27,781.52
  6. Step 6: Final answer
    x = 21,642.38

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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.