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Finding the Fourth Proportional to 28,859.76, 43,292.61 and 7,799.92

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Solution

The fourth proportional to 28,859.76, 43,292.61 and 7,799.92 is: 11,700.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,859.76 : 43,292.61 = 7,799.92 : x
  2. Step 2: Convert to fraction form
    28,859.76/43,292.61 = 7,799.92/x
  3. Step 3: Cross multiply
    28,859.76x = 43,292.61 × 7,799.92
  4. Step 4: Simplify right side
    28,859.76x = 337,678,786.36
  5. Step 5: Solve for x
    x = 337,678,786.36/28,859.76
  6. Step 6: Final answer
    x = 11,700.68

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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.