Home / 13,129.49-19,696.80-4,247.02

Finding the Fourth Proportional to 13,129.49, 19,696.80 and 4,247.02

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Solution

The fourth proportional to 13,129.49, 19,696.80 and 4,247.02 is: 6,371.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,129.49 : 19,696.80 = 4,247.02 : x
  2. Step 2: Convert to fraction form
    13,129.49/19,696.80 = 4,247.02/x
  3. Step 3: Cross multiply
    13,129.49x = 19,696.80 × 4,247.02
  4. Step 4: Simplify right side
    13,129.49x = 83,652,720.19
  5. Step 5: Solve for x
    x = 83,652,720.19/13,129.49
  6. Step 6: Final answer
    x = 6,371.36

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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.