Home / 27,729.48-38,264.55-15,790.44

Finding the Fourth Proportional to 27,729.48, 38,264.55 and 15,790.44

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Solution

The fourth proportional to 27,729.48, 38,264.55 and 15,790.44 is: 21,789.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,729.48 : 38,264.55 = 15,790.44 : x
  2. Step 2: Convert to fraction form
    27,729.48/38,264.55 = 15,790.44/x
  3. Step 3: Cross multiply
    27,729.48x = 38,264.55 × 15,790.44
  4. Step 4: Simplify right side
    27,729.48x = 604,214,080.90
  5. Step 5: Solve for x
    x = 604,214,080.90/27,729.48
  6. Step 6: Final answer
    x = 21,789.59

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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.