Home / 39,682.76-54,762.62-21,778.92

Finding the Fourth Proportional to 39,682.76, 54,762.62 and 21,778.92

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Solution

The fourth proportional to 39,682.76, 54,762.62 and 21,778.92 is: 30,055.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,682.76 : 54,762.62 = 21,778.92 : x
  2. Step 2: Convert to fraction form
    39,682.76/54,762.62 = 21,778.92/x
  3. Step 3: Cross multiply
    39,682.76x = 54,762.62 × 21,778.92
  4. Step 4: Simplify right side
    39,682.76x = 1,192,670,611.08
  5. Step 5: Solve for x
    x = 1,192,670,611.08/39,682.76
  6. Step 6: Final answer
    x = 30,055.14

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Double 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.