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Finding the Fourth Proportional to 11,959.90, 17,902.93 and 7,790.93

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Solution

The fourth proportional to 11,959.90, 17,902.93 and 7,790.93 is: 11,662.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,959.90 : 17,902.93 = 7,790.93 : x
  2. Step 2: Convert to fraction form
    11,959.90/17,902.93 = 7,790.93/x
  3. Step 3: Cross multiply
    11,959.90x = 17,902.93 × 7,790.93
  4. Step 4: Simplify right side
    11,959.90x = 139,480,474.42
  5. Step 5: Solve for x
    x = 139,480,474.42/11,959.90
  6. Step 6: Final answer
    x = 11,662.34

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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.