Home / 27,779.90-38,335.97-15,032.80

Finding the Fourth Proportional to 27,779.90, 38,335.97 and 15,032.80

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Solution

The fourth proportional to 27,779.90, 38,335.97 and 15,032.80 is: 20,745.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,779.90 : 38,335.97 = 15,032.80 : x
  2. Step 2: Convert to fraction form
    27,779.90/38,335.97 = 15,032.80/x
  3. Step 3: Cross multiply
    27,779.90x = 38,335.97 × 15,032.80
  4. Step 4: Simplify right side
    27,779.90x = 576,296,911.56
  5. Step 5: Solve for x
    x = 576,296,911.56/27,779.90
  6. Step 6: Final answer
    x = 20,745.10

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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.