Home / 12,709.31-19,039.25-6,140.10

Finding the Fourth Proportional to 12,709.31, 19,039.25 and 6,140.10

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Solution

The fourth proportional to 12,709.31, 19,039.25 and 6,140.10 is: 9,198.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,709.31 : 19,039.25 = 6,140.10 : x
  2. Step 2: Convert to fraction form
    12,709.31/19,039.25 = 6,140.10/x
  3. Step 3: Cross multiply
    12,709.31x = 19,039.25 × 6,140.10
  4. Step 4: Simplify right side
    12,709.31x = 116,902,985.67
  5. Step 5: Solve for x
    x = 116,902,985.67/12,709.31
  6. Step 6: Final answer
    x = 9,198.22

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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.