Home / 33,356.25-46,031.64-20,781

Finding the Fourth Proportional to 33,356.25, 46,031.64 and 20,781

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Solution

The fourth proportional to 33,356.25, 46,031.64 and 20,781 is: 28,677.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,356.25 : 46,031.64 = 20,781 : x
  2. Step 2: Convert to fraction form
    33,356.25/46,031.64 = 20,781/x
  3. Step 3: Cross multiply
    33,356.25x = 46,031.64 × 20,781
  4. Step 4: Simplify right side
    33,356.25x = 956,583,510.84
  5. Step 5: Solve for x
    x = 956,583,510.84/33,356.25
  6. Step 6: Final answer
    x = 28,677.79

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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.