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Finding the Fourth Proportional to 12,491.66, 18,732.02 and 4,695

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Solution

The fourth proportional to 12,491.66, 18,732.02 and 4,695 is: 7,040.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,491.66 : 18,732.02 = 4,695 : x
  2. Step 2: Convert to fraction form
    12,491.66/18,732.02 = 4,695/x
  3. Step 3: Cross multiply
    12,491.66x = 18,732.02 × 4,695
  4. Step 4: Simplify right side
    12,491.66x = 87,946,810.43
  5. Step 5: Solve for x
    x = 87,946,810.43/12,491.66
  6. Step 6: Final answer
    x = 7,040.45

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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.