Home / 12,731.10-19,071.09-6,490.86

Finding the Fourth Proportional to 12,731.10, 19,071.09 and 6,490.86

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Solution

The fourth proportional to 12,731.10, 19,071.09 and 6,490.86 is: 9,723.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,731.10 : 19,071.09 = 6,490.86 : x
  2. Step 2: Convert to fraction form
    12,731.10/19,071.09 = 6,490.86/x
  3. Step 3: Cross multiply
    12,731.10x = 19,071.09 × 6,490.86
  4. Step 4: Simplify right side
    12,731.10x = 123,787,775.24
  5. Step 5: Solve for x
    x = 123,787,775.24/12,731.10
  6. Step 6: Final answer
    x = 9,723.26

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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.