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Finding the Fourth Proportional to 18,597.50, 27,859.34 and 8,706.79

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Solution

The fourth proportional to 18,597.50, 27,859.34 and 8,706.79 is: 13,042.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,597.50 : 27,859.34 = 8,706.79 : x
  2. Step 2: Convert to fraction form
    18,597.50/27,859.34 = 8,706.79/x
  3. Step 3: Cross multiply
    18,597.50x = 27,859.34 × 8,706.79
  4. Step 4: Simplify right side
    18,597.50x = 242,565,479.51
  5. Step 5: Solve for x
    x = 242,565,479.51/18,597.50
  6. Step 6: Final answer
    x = 13,042.91

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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.