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Finding the Fourth Proportional to 27,906.90, 41,860.35 and 7,130.40

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Solution

The fourth proportional to 27,906.90, 41,860.35 and 7,130.40 is: 10,695.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,906.90 : 41,860.35 = 7,130.40 : x
  2. Step 2: Convert to fraction form
    27,906.90/41,860.35 = 7,130.40/x
  3. Step 3: Cross multiply
    27,906.90x = 41,860.35 × 7,130.40
  4. Step 4: Simplify right side
    27,906.90x = 298,481,039.64
  5. Step 5: Solve for x
    x = 298,481,039.64/27,906.90
  6. Step 6: Final answer
    x = 10,695.60

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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.