Home / 28,448.70-39,253.59-15,871.02

Finding the Fourth Proportional to 28,448.70, 39,253.59 and 15,871.02

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Solution

The fourth proportional to 28,448.70, 39,253.59 and 15,871.02 is: 21,898.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,448.70 : 39,253.59 = 15,871.02 : x
  2. Step 2: Convert to fraction form
    28,448.70/39,253.59 = 15,871.02/x
  3. Step 3: Cross multiply
    28,448.70x = 39,253.59 × 15,871.02
  4. Step 4: Simplify right side
    28,448.70x = 622,994,511.96
  5. Step 5: Solve for x
    x = 622,994,511.96/28,448.70
  6. Step 6: Final answer
    x = 21,898.87

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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.