Home / 12,750.78-19,090.70-6,497.31

Finding the Fourth Proportional to 12,750.78, 19,090.70 and 6,497.31

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Solution

The fourth proportional to 12,750.78, 19,090.70 and 6,497.31 is: 9,727.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,750.78 : 19,090.70 = 6,497.31 : x
  2. Step 2: Convert to fraction form
    12,750.78/19,090.70 = 6,497.31/x
  3. Step 3: Cross multiply
    12,750.78x = 19,090.70 × 6,497.31
  4. Step 4: Simplify right side
    12,750.78x = 124,038,163.53
  5. Step 5: Solve for x
    x = 124,038,163.53/12,750.78
  6. Step 6: Final answer
    x = 9,727.89

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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.