Home / 11,675.86-16,114.08-6,640.84

Finding the Fourth Proportional to 11,675.86, 16,114.08 and 6,640.84

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Solution

The fourth proportional to 11,675.86, 16,114.08 and 6,640.84 is: 9,165.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,675.86 : 16,114.08 = 6,640.84 : x
  2. Step 2: Convert to fraction form
    11,675.86/16,114.08 = 6,640.84/x
  3. Step 3: Cross multiply
    11,675.86x = 16,114.08 × 6,640.84
  4. Step 4: Simplify right side
    11,675.86x = 107,011,027.03
  5. Step 5: Solve for x
    x = 107,011,027.03/11,675.86
  6. Step 6: Final answer
    x = 9,165.15

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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.