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Finding the Fourth Proportional to 18,647.08, 27,970.68 and 6,960.12

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Solution

The fourth proportional to 18,647.08, 27,970.68 and 6,960.12 is: 10,440.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,647.08 : 27,970.68 = 6,960.12 : x
  2. Step 2: Convert to fraction form
    18,647.08/27,970.68 = 6,960.12/x
  3. Step 3: Cross multiply
    18,647.08x = 27,970.68 × 6,960.12
  4. Step 4: Simplify right side
    18,647.08x = 194,679,289.28
  5. Step 5: Solve for x
    x = 194,679,289.28/18,647.08
  6. Step 6: Final answer
    x = 10,440.20

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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.