Home / 11,805.60-17,690.58-7,120.39

Finding the Fourth Proportional to 11,805.60, 17,690.58 and 7,120.39

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Solution

The fourth proportional to 11,805.60, 17,690.58 and 7,120.39 is: 10,669.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,805.60 : 17,690.58 = 7,120.39 : x
  2. Step 2: Convert to fraction form
    11,805.60/17,690.58 = 7,120.39/x
  3. Step 3: Cross multiply
    11,805.60x = 17,690.58 × 7,120.39
  4. Step 4: Simplify right side
    11,805.60x = 125,963,828.93
  5. Step 5: Solve for x
    x = 125,963,828.93/11,805.60
  6. Step 6: Final answer
    x = 10,669.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.