Home / 13,107.80-19,629.30-8,701.40

Finding the Fourth Proportional to 13,107.80, 19,629.30 and 8,701.40

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Solution

The fourth proportional to 13,107.80, 19,629.30 and 8,701.40 is: 13,030.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,107.80 : 19,629.30 = 8,701.40 : x
  2. Step 2: Convert to fraction form
    13,107.80/19,629.30 = 8,701.40/x
  3. Step 3: Cross multiply
    13,107.80x = 19,629.30 × 8,701.40
  4. Step 4: Simplify right side
    13,107.80x = 170,802,391.02
  5. Step 5: Solve for x
    x = 170,802,391.02/13,107.80
  6. Step 6: Final answer
    x = 13,030.59

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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.