Home / 15,351.91-21,184.77-8,637.82

Finding the Fourth Proportional to 15,351.91, 21,184.77 and 8,637.82

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Solution

The fourth proportional to 15,351.91, 21,184.77 and 8,637.82 is: 11,919.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,351.91 : 21,184.77 = 8,637.82 : x
  2. Step 2: Convert to fraction form
    15,351.91/21,184.77 = 8,637.82/x
  3. Step 3: Cross multiply
    15,351.91x = 21,184.77 × 8,637.82
  4. Step 4: Simplify right side
    15,351.91x = 182,990,230.00
  5. Step 5: Solve for x
    x = 182,990,230.00/15,351.91
  6. Step 6: Final answer
    x = 11,919.70

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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.