Home / 11,108.60-16,634.10-8,785.40

Finding the Fourth Proportional to 11,108.60, 16,634.10 and 8,785.40

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Solution

The fourth proportional to 11,108.60, 16,634.10 and 8,785.40 is: 13,155.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,108.60 : 16,634.10 = 8,785.40 : x
  2. Step 2: Convert to fraction form
    11,108.60/16,634.10 = 8,785.40/x
  3. Step 3: Cross multiply
    11,108.60x = 16,634.10 × 8,785.40
  4. Step 4: Simplify right side
    11,108.60x = 146,137,222.14
  5. Step 5: Solve for x
    x = 146,137,222.14/11,108.60
  6. Step 6: Final answer
    x = 13,155.32

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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.