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Finding the Fourth Proportional to 39,931, 55,105.02 and 22,026.64

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Solution

The fourth proportional to 39,931, 55,105.02 and 22,026.64 is: 30,396.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,931 : 55,105.02 = 22,026.64 : x
  2. Step 2: Convert to fraction form
    39,931/55,105.02 = 22,026.64/x
  3. Step 3: Cross multiply
    39,931x = 55,105.02 × 22,026.64
  4. Step 4: Simplify right side
    39,931x = 1,213,778,437.73
  5. Step 5: Solve for x
    x = 1,213,778,437.73/39,931
  6. Step 6: Final answer
    x = 30,396.90

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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.