Home / 8,623.18-12,916.83-8,325.78

Finding the Fourth Proportional to 8,623.18, 12,916.83 and 8,325.78

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Solution

The fourth proportional to 8,623.18, 12,916.83 and 8,325.78 is: 12,471.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,623.18 : 12,916.83 = 8,325.78 : x
  2. Step 2: Convert to fraction form
    8,623.18/12,916.83 = 8,325.78/x
  3. Step 3: Cross multiply
    8,623.18x = 12,916.83 × 8,325.78
  4. Step 4: Simplify right side
    8,623.18x = 107,542,667.66
  5. Step 5: Solve for x
    x = 107,542,667.66/8,623.18
  6. Step 6: Final answer
    x = 12,471.34

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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.