Home / 12,721.44-19,061.81-8,040.66

Finding the Fourth Proportional to 12,721.44, 19,061.81 and 8,040.66

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Solution

The fourth proportional to 12,721.44, 19,061.81 and 8,040.66 is: 12,048.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.44 : 19,061.81 = 8,040.66 : x
  2. Step 2: Convert to fraction form
    12,721.44/19,061.81 = 8,040.66/x
  3. Step 3: Cross multiply
    12,721.44x = 19,061.81 × 8,040.66
  4. Step 4: Simplify right side
    12,721.44x = 153,269,533.19
  5. Step 5: Solve for x
    x = 153,269,533.19/12,721.44
  6. Step 6: Final answer
    x = 12,048.13

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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.