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Finding the Fourth Proportional to 18,658.30, 27,970.89 and 7,573.18

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Solution

The fourth proportional to 18,658.30, 27,970.89 and 7,573.18 is: 11,353.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658.30 : 27,970.89 = 7,573.18 : x
  2. Step 2: Convert to fraction form
    18,658.30/27,970.89 = 7,573.18/x
  3. Step 3: Cross multiply
    18,658.30x = 27,970.89 × 7,573.18
  4. Step 4: Simplify right side
    18,658.30x = 211,828,584.73
  5. Step 5: Solve for x
    x = 211,828,584.73/18,658.30
  6. Step 6: Final answer
    x = 11,353.05

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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.