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Finding the Fourth Proportional to 10,745.15, 16,117.02 and 6,390.32

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Solution

The fourth proportional to 10,745.15, 16,117.02 and 6,390.32 is: 9,585.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,745.15 : 16,117.02 = 6,390.32 : x
  2. Step 2: Convert to fraction form
    10,745.15/16,117.02 = 6,390.32/x
  3. Step 3: Cross multiply
    10,745.15x = 16,117.02 × 6,390.32
  4. Step 4: Simplify right side
    10,745.15x = 102,992,834.66
  5. Step 5: Solve for x
    x = 102,992,834.66/10,745.15
  6. Step 6: Final answer
    x = 9,585.06

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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.