Home / 27,709.72-38,238.86-15,772.80

Finding the Fourth Proportional to 27,709.72, 38,238.86 and 15,772.80

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Solution

The fourth proportional to 27,709.72, 38,238.86 and 15,772.80 is: 21,766.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,709.72 : 38,238.86 = 15,772.80 : x
  2. Step 2: Convert to fraction form
    27,709.72/38,238.86 = 15,772.80/x
  3. Step 3: Cross multiply
    27,709.72x = 38,238.86 × 15,772.80
  4. Step 4: Simplify right side
    27,709.72x = 603,133,891.01
  5. Step 5: Solve for x
    x = 603,133,891.01/27,709.72
  6. Step 6: Final answer
    x = 21,766.15

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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.