Home / 13,289.07-18,338.69-7,321.29

Finding the Fourth Proportional to 13,289.07, 18,338.69 and 7,321.29

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Solution

The fourth proportional to 13,289.07, 18,338.69 and 7,321.29 is: 10,103.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.07 : 18,338.69 = 7,321.29 : x
  2. Step 2: Convert to fraction form
    13,289.07/18,338.69 = 7,321.29/x
  3. Step 3: Cross multiply
    13,289.07x = 18,338.69 × 7,321.29
  4. Step 4: Simplify right side
    13,289.07x = 134,262,920.40
  5. Step 5: Solve for x
    x = 134,262,920.40/13,289.07
  6. Step 6: Final answer
    x = 10,103.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.