Home / 14,083.72-21,083.48-8,520.25

Finding the Fourth Proportional to 14,083.72, 21,083.48 and 8,520.25

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Solution

The fourth proportional to 14,083.72, 21,083.48 and 8,520.25 is: 12,754.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,083.72 : 21,083.48 = 8,520.25 : x
  2. Step 2: Convert to fraction form
    14,083.72/21,083.48 = 8,520.25/x
  3. Step 3: Cross multiply
    14,083.72x = 21,083.48 × 8,520.25
  4. Step 4: Simplify right side
    14,083.72x = 179,636,436.35
  5. Step 5: Solve for x
    x = 179,636,436.35/14,083.72
  6. Step 6: Final answer
    x = 12,754.90

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1.5x scale

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.