Home / 11,916.53-16,434.90-8,938.97

Finding the Fourth Proportional to 11,916.53, 16,434.90 and 8,938.97

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Solution

The fourth proportional to 11,916.53, 16,434.90 and 8,938.97 is: 12,328.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,916.53 : 16,434.90 = 8,938.97 : x
  2. Step 2: Convert to fraction form
    11,916.53/16,434.90 = 8,938.97/x
  3. Step 3: Cross multiply
    11,916.53x = 16,434.90 × 8,938.97
  4. Step 4: Simplify right side
    11,916.53x = 146,911,078.05
  5. Step 5: Solve for x
    x = 146,911,078.05/11,916.53
  6. Step 6: Final answer
    x = 12,328.34

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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.