Home / 15,257.51-21,053.89-8,542.61

Finding the Fourth Proportional to 15,257.51, 21,053.89 and 8,542.61

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Solution

The fourth proportional to 15,257.51, 21,053.89 and 8,542.61 is: 11,787.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,257.51 : 21,053.89 = 8,542.61 : x
  2. Step 2: Convert to fraction form
    15,257.51/21,053.89 = 8,542.61/x
  3. Step 3: Cross multiply
    15,257.51x = 21,053.89 × 8,542.61
  4. Step 4: Simplify right side
    15,257.51x = 179,855,171.25
  5. Step 5: Solve for x
    x = 179,855,171.25/15,257.51
  6. Step 6: Final answer
    x = 11,787.98

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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.