Home / 27,762.74-38,288.36-19,680.41

Finding the Fourth Proportional to 27,762.74, 38,288.36 and 19,680.41

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Solution

The fourth proportional to 27,762.74, 38,288.36 and 19,680.41 is: 27,141.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,762.74 : 38,288.36 = 19,680.41 : x
  2. Step 2: Convert to fraction form
    27,762.74/38,288.36 = 19,680.41/x
  3. Step 3: Cross multiply
    27,762.74x = 38,288.36 × 19,680.41
  4. Step 4: Simplify right side
    27,762.74x = 753,530,623.03
  5. Step 5: Solve for x
    x = 753,530,623.03/27,762.74
  6. Step 6: Final answer
    x = 27,141.80

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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.