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Finding the Fourth Proportional to 18,435.76, 27,631.76 and 10,119.69

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Solution

The fourth proportional to 18,435.76, 27,631.76 and 10,119.69 is: 15,167.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,435.76 : 27,631.76 = 10,119.69 : x
  2. Step 2: Convert to fraction form
    18,435.76/27,631.76 = 10,119.69/x
  3. Step 3: Cross multiply
    18,435.76x = 27,631.76 × 10,119.69
  4. Step 4: Simplify right side
    18,435.76x = 279,624,794.76
  5. Step 5: Solve for x
    x = 279,624,794.76/18,435.76
  6. Step 6: Final answer
    x = 15,167.52

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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.