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Finding the Fourth Proportional to 18,412.20, 27,647.10 and 10,636.20

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Solution

The fourth proportional to 18,412.20, 27,647.10 and 10,636.20 is: 15,970.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,412.20 : 27,647.10 = 10,636.20 : x
  2. Step 2: Convert to fraction form
    18,412.20/27,647.10 = 10,636.20/x
  3. Step 3: Cross multiply
    18,412.20x = 27,647.10 × 10,636.20
  4. Step 4: Simplify right side
    18,412.20x = 294,060,085.02
  5. Step 5: Solve for x
    x = 294,060,085.02/18,412.20
  6. Step 6: Final answer
    x = 15,970.94

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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.