Home / 11,945.55-16,484.51-6,640.05

Finding the Fourth Proportional to 11,945.55, 16,484.51 and 6,640.05

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Solution

The fourth proportional to 11,945.55, 16,484.51 and 6,640.05 is: 9,163.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,945.55 : 16,484.51 = 6,640.05 : x
  2. Step 2: Convert to fraction form
    11,945.55/16,484.51 = 6,640.05/x
  3. Step 3: Cross multiply
    11,945.55x = 16,484.51 × 6,640.05
  4. Step 4: Simplify right side
    11,945.55x = 109,457,937.43
  5. Step 5: Solve for x
    x = 109,457,937.43/11,945.55
  6. Step 6: Final answer
    x = 9,163.07

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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.