Home / 11,715.36-16,167.60-6,410.40

Finding the Fourth Proportional to 11,715.36, 16,167.60 and 6,410.40

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Solution

The fourth proportional to 11,715.36, 16,167.60 and 6,410.40 is: 8,846.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,715.36 : 16,167.60 = 6,410.40 : x
  2. Step 2: Convert to fraction form
    11,715.36/16,167.60 = 6,410.40/x
  3. Step 3: Cross multiply
    11,715.36x = 16,167.60 × 6,410.40
  4. Step 4: Simplify right side
    11,715.36x = 103,640,783.04
  5. Step 5: Solve for x
    x = 103,640,783.04/11,715.36
  6. Step 6: Final answer
    x = 8,846.57

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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.