Home / 11,686.35-16,128.54-6,652.20

Finding the Fourth Proportional to 11,686.35, 16,128.54 and 6,652.20

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Solution

The fourth proportional to 11,686.35, 16,128.54 and 6,652.20 is: 9,180.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,686.35 : 16,128.54 = 6,652.20 : x
  2. Step 2: Convert to fraction form
    11,686.35/16,128.54 = 6,652.20/x
  3. Step 3: Cross multiply
    11,686.35x = 16,128.54 × 6,652.20
  4. Step 4: Simplify right side
    11,686.35x = 107,290,273.79
  5. Step 5: Solve for x
    x = 107,290,273.79/11,686.35
  6. Step 6: Final answer
    x = 9,180.82

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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.