Home / 21,151.72-31,727.82-5,570.92

Finding the Fourth Proportional to 21,151.72, 31,727.82 and 5,570.92

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Solution

The fourth proportional to 21,151.72, 31,727.82 and 5,570.92 is: 8,356.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151.72 : 31,727.82 = 5,570.92 : x
  2. Step 2: Convert to fraction form
    21,151.72/31,727.82 = 5,570.92/x
  3. Step 3: Cross multiply
    21,151.72x = 31,727.82 × 5,570.92
  4. Step 4: Simplify right side
    21,151.72x = 176,753,146.99
  5. Step 5: Solve for x
    x = 176,753,146.99/21,151.72
  6. Step 6: Final answer
    x = 8,356.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.