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Finding the Fourth Proportional to 18,140.56, 27,216.72 and 8,900.08

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Solution

The fourth proportional to 18,140.56, 27,216.72 and 8,900.08 is: 13,353.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,140.56 : 27,216.72 = 8,900.08 : x
  2. Step 2: Convert to fraction form
    18,140.56/27,216.72 = 8,900.08/x
  3. Step 3: Cross multiply
    18,140.56x = 27,216.72 × 8,900.08
  4. Step 4: Simplify right side
    18,140.56x = 242,230,985.34
  5. Step 5: Solve for x
    x = 242,230,985.34/18,140.56
  6. Step 6: Final answer
    x = 13,353.00

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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.