Home / 28,514.61-39,348.56-15,767.05

Finding the Fourth Proportional to 28,514.61, 39,348.56 and 15,767.05

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Solution

The fourth proportional to 28,514.61, 39,348.56 and 15,767.05 is: 21,757.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,514.61 : 39,348.56 = 15,767.05 : x
  2. Step 2: Convert to fraction form
    28,514.61/39,348.56 = 15,767.05/x
  3. Step 3: Cross multiply
    28,514.61x = 39,348.56 × 15,767.05
  4. Step 4: Simplify right side
    28,514.61x = 620,410,712.95
  5. Step 5: Solve for x
    x = 620,410,712.95/28,514.61
  6. Step 6: Final answer
    x = 21,757.64

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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.