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Finding the Fourth Proportional to 18,630.50, 25,710.06 and 10,247

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Solution

The fourth proportional to 18,630.50, 25,710.06 and 10,247 is: 14,140.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630.50 : 25,710.06 = 10,247 : x
  2. Step 2: Convert to fraction form
    18,630.50/25,710.06 = 10,247/x
  3. Step 3: Cross multiply
    18,630.50x = 25,710.06 × 10,247
  4. Step 4: Simplify right side
    18,630.50x = 263,450,984.82
  5. Step 5: Solve for x
    x = 263,450,984.82/18,630.50
  6. Step 6: Final answer
    x = 14,140.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.