Home / 15,618.54-21,553.91-8,545.12

Finding the Fourth Proportional to 15,618.54, 21,553.91 and 8,545.12

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Solution

The fourth proportional to 15,618.54, 21,553.91 and 8,545.12 is: 11,792.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,618.54 : 21,553.91 = 8,545.12 : x
  2. Step 2: Convert to fraction form
    15,618.54/21,553.91 = 8,545.12/x
  3. Step 3: Cross multiply
    15,618.54x = 21,553.91 × 8,545.12
  4. Step 4: Simplify right side
    15,618.54x = 184,180,623.87
  5. Step 5: Solve for x
    x = 184,180,623.87/15,618.54
  6. Step 6: Final answer
    x = 11,792.43

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1.5x scale

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.