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Finding the Fourth Proportional to 18,289.80, 27,444.87 and 8,929.94

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Solution

The fourth proportional to 18,289.80, 27,444.87 and 8,929.94 is: 13,399.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,289.80 : 27,444.87 = 8,929.94 : x
  2. Step 2: Convert to fraction form
    18,289.80/27,444.87 = 8,929.94/x
  3. Step 3: Cross multiply
    18,289.80x = 27,444.87 × 8,929.94
  4. Step 4: Simplify right side
    18,289.80x = 245,080,905.18
  5. Step 5: Solve for x
    x = 245,080,905.18/18,289.80
  6. Step 6: Final answer
    x = 13,399.87

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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.