Home / 28,428.31-39,246.92-19,956.43

Finding the Fourth Proportional to 28,428.31, 39,246.92 and 19,956.43

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Solution

The fourth proportional to 28,428.31, 39,246.92 and 19,956.43 is: 27,551.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,428.31 : 39,246.92 = 19,956.43 : x
  2. Step 2: Convert to fraction form
    28,428.31/39,246.92 = 19,956.43/x
  3. Step 3: Cross multiply
    28,428.31x = 39,246.92 × 19,956.43
  4. Step 4: Simplify right side
    28,428.31x = 783,228,411.70
  5. Step 5: Solve for x
    x = 783,228,411.70/28,428.31
  6. Step 6: Final answer
    x = 27,551.00

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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.