Home / 12,697.29-19,040.40-3,930.16

Finding the Fourth Proportional to 12,697.29, 19,040.40 and 3,930.16

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Solution

The fourth proportional to 12,697.29, 19,040.40 and 3,930.16 is: 5,893.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,697.29 : 19,040.40 = 3,930.16 : x
  2. Step 2: Convert to fraction form
    12,697.29/19,040.40 = 3,930.16/x
  3. Step 3: Cross multiply
    12,697.29x = 19,040.40 × 3,930.16
  4. Step 4: Simplify right side
    12,697.29x = 74,831,818.46
  5. Step 5: Solve for x
    x = 74,831,818.46/12,697.29
  6. Step 6: Final answer
    x = 5,893.53

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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.