Home / 11,881.12-16,397.76-7,405.60

Finding the Fourth Proportional to 11,881.12, 16,397.76 and 7,405.60

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Solution

The fourth proportional to 11,881.12, 16,397.76 and 7,405.60 is: 10,220.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,881.12 : 16,397.76 = 7,405.60 : x
  2. Step 2: Convert to fraction form
    11,881.12/16,397.76 = 7,405.60/x
  3. Step 3: Cross multiply
    11,881.12x = 16,397.76 × 7,405.60
  4. Step 4: Simplify right side
    11,881.12x = 121,435,251.46
  5. Step 5: Solve for x
    x = 121,435,251.46/11,881.12
  6. Step 6: Final answer
    x = 10,220.86

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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.