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Finding the Fourth Proportional to 22,329.78, 30,815.44 and 12,258.08

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Solution

The fourth proportional to 22,329.78, 30,815.44 and 12,258.08 is: 16,916.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,329.78 : 30,815.44 = 12,258.08 : x
  2. Step 2: Convert to fraction form
    22,329.78/30,815.44 = 12,258.08/x
  3. Step 3: Cross multiply
    22,329.78x = 30,815.44 × 12,258.08
  4. Step 4: Simplify right side
    22,329.78x = 377,738,232.93
  5. Step 5: Solve for x
    x = 377,738,232.93/22,329.78
  6. Step 6: Final answer
    x = 16,916.35

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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.