Home / 15,618.92-21,553.74-8,545.40

Finding the Fourth Proportional to 15,618.92, 21,553.74 and 8,545.40

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Solution

The fourth proportional to 15,618.92, 21,553.74 and 8,545.40 is: 11,792.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,618.92 : 21,553.74 = 8,545.40 : x
  2. Step 2: Convert to fraction form
    15,618.92/21,553.74 = 8,545.40/x
  3. Step 3: Cross multiply
    15,618.92x = 21,553.74 × 8,545.40
  4. Step 4: Simplify right side
    15,618.92x = 184,185,329.80
  5. Step 5: Solve for x
    x = 184,185,329.80/15,618.92
  6. Step 6: Final answer
    x = 11,792.45

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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.