Home / 39,885.84-55,042.22-21,736.53

Finding the Fourth Proportional to 39,885.84, 55,042.22 and 21,736.53

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Solution

The fourth proportional to 39,885.84, 55,042.22 and 21,736.53 is: 29,996.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,885.84 : 55,042.22 = 21,736.53 : x
  2. Step 2: Convert to fraction form
    39,885.84/55,042.22 = 21,736.53/x
  3. Step 3: Cross multiply
    39,885.84x = 55,042.22 × 21,736.53
  4. Step 4: Simplify right side
    39,885.84x = 1,196,426,757.61
  5. Step 5: Solve for x
    x = 1,196,426,757.61/39,885.84
  6. Step 6: Final answer
    x = 29,996.28

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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.