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Finding the Fourth Proportional to 27,785.70, 41,678.55 and 7,009.20

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Solution

The fourth proportional to 27,785.70, 41,678.55 and 7,009.20 is: 10,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,785.70 : 41,678.55 = 7,009.20 : x
  2. Step 2: Convert to fraction form
    27,785.70/41,678.55 = 7,009.20/x
  3. Step 3: Cross multiply
    27,785.70x = 41,678.55 × 7,009.20
  4. Step 4: Simplify right side
    27,785.70x = 292,133,292.66
  5. Step 5: Solve for x
    x = 292,133,292.66/27,785.70
  6. Step 6: Final answer
    x = 10,513.80

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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.