Home / 27,651.86-38,160.58-15,717.20

Finding the Fourth Proportional to 27,651.86, 38,160.58 and 15,717.20

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Solution

The fourth proportional to 27,651.86, 38,160.58 and 15,717.20 is: 21,690.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,651.86 : 38,160.58 = 15,717.20 : x
  2. Step 2: Convert to fraction form
    27,651.86/38,160.58 = 15,717.20/x
  3. Step 3: Cross multiply
    27,651.86x = 38,160.58 × 15,717.20
  4. Step 4: Simplify right side
    27,651.86x = 599,777,467.98
  5. Step 5: Solve for x
    x = 599,777,467.98/27,651.86
  6. Step 6: Final answer
    x = 21,690.31

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Half scale
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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.