Home / 12,814.47-19,237.91-8,939.43

Finding the Fourth Proportional to 12,814.47, 19,237.91 and 8,939.43

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Solution

The fourth proportional to 12,814.47, 19,237.91 and 8,939.43 is: 13,420.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,814.47 : 19,237.91 = 8,939.43 : x
  2. Step 2: Convert to fraction form
    12,814.47/19,237.91 = 8,939.43/x
  3. Step 3: Cross multiply
    12,814.47x = 19,237.91 × 8,939.43
  4. Step 4: Simplify right side
    12,814.47x = 171,975,905.09
  5. Step 5: Solve for x
    x = 171,975,905.09/12,814.47
  6. Step 6: Final answer
    x = 13,420.45

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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.