Home / 14,257.30-21,385.94-7,725

Finding the Fourth Proportional to 14,257.30, 21,385.94 and 7,725

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Solution

The fourth proportional to 14,257.30, 21,385.94 and 7,725 is: 11,587.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,257.30 : 21,385.94 = 7,725 : x
  2. Step 2: Convert to fraction form
    14,257.30/21,385.94 = 7,725/x
  3. Step 3: Cross multiply
    14,257.30x = 21,385.94 × 7,725
  4. Step 4: Simplify right side
    14,257.30x = 165,206,386.50
  5. Step 5: Solve for x
    x = 165,206,386.50/14,257.30
  6. Step 6: Final answer
    x = 11,587.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.