Home / 18,328.72-27,491.10-12,443.44

Finding the Fourth Proportional to 18,328.72, 27,491.10 and 12,443.44

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Solution

The fourth proportional to 18,328.72, 27,491.10 and 12,443.44 is: 18,663.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,328.72 : 27,491.10 = 12,443.44 : x
  2. Step 2: Convert to fraction form
    18,328.72/27,491.10 = 12,443.44/x
  3. Step 3: Cross multiply
    18,328.72x = 27,491.10 × 12,443.44
  4. Step 4: Simplify right side
    18,328.72x = 342,083,853.38
  5. Step 5: Solve for x
    x = 342,083,853.38/18,328.72
  6. Step 6: Final answer
    x = 18,663.82

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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.