Home / 28,954.41-39,963.29-18,864.78

Finding the Fourth Proportional to 28,954.41, 39,963.29 and 18,864.78

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Solution

The fourth proportional to 28,954.41, 39,963.29 and 18,864.78 is: 26,037.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,954.41 : 39,963.29 = 18,864.78 : x
  2. Step 2: Convert to fraction form
    28,954.41/39,963.29 = 18,864.78/x
  3. Step 3: Cross multiply
    28,954.41x = 39,963.29 × 18,864.78
  4. Step 4: Simplify right side
    28,954.41x = 753,898,579.60
  5. Step 5: Solve for x
    x = 753,898,579.60/28,954.41
  6. Step 6: Final answer
    x = 26,037.44

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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.