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Finding the Fourth Proportional to 39,927.66, 55,098.12 and 22,920.12

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Solution

The fourth proportional to 39,927.66, 55,098.12 and 22,920.12 is: 31,628.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,927.66 : 55,098.12 = 22,920.12 : x
  2. Step 2: Convert to fraction form
    39,927.66/55,098.12 = 22,920.12/x
  3. Step 3: Cross multiply
    39,927.66x = 55,098.12 × 22,920.12
  4. Step 4: Simplify right side
    39,927.66x = 1,262,855,522.17
  5. Step 5: Solve for x
    x = 1,262,855,522.17/39,927.66
  6. Step 6: Final answer
    x = 31,628.59

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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.