Home / 12,971.36-19,440.64-7,048

Finding the Fourth Proportional to 12,971.36, 19,440.64 and 7,048

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Solution

The fourth proportional to 12,971.36, 19,440.64 and 7,048 is: 10,563.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,971.36 : 19,440.64 = 7,048 : x
  2. Step 2: Convert to fraction form
    12,971.36/19,440.64 = 7,048/x
  3. Step 3: Cross multiply
    12,971.36x = 19,440.64 × 7,048
  4. Step 4: Simplify right side
    12,971.36x = 137,017,630.72
  5. Step 5: Solve for x
    x = 137,017,630.72/12,971.36
  6. Step 6: Final answer
    x = 10,563.09

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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.