Home / 11,772.01-16,221.93-8,405.35

Finding the Fourth Proportional to 11,772.01, 16,221.93 and 8,405.35

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Solution

The fourth proportional to 11,772.01, 16,221.93 and 8,405.35 is: 11,582.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,772.01 : 16,221.93 = 8,405.35 : x
  2. Step 2: Convert to fraction form
    11,772.01/16,221.93 = 8,405.35/x
  3. Step 3: Cross multiply
    11,772.01x = 16,221.93 × 8,405.35
  4. Step 4: Simplify right side
    11,772.01x = 136,350,999.33
  5. Step 5: Solve for x
    x = 136,350,999.33/11,772.01
  6. Step 6: Final answer
    x = 11,582.64

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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.