Home / 13,289.36-18,339.30-7,321.01

Finding the Fourth Proportional to 13,289.36, 18,339.30 and 7,321.01

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Solution

The fourth proportional to 13,289.36, 18,339.30 and 7,321.01 is: 10,102.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,289.36 : 18,339.30 = 7,321.01 : x
  2. Step 2: Convert to fraction form
    13,289.36/18,339.30 = 7,321.01/x
  3. Step 3: Cross multiply
    13,289.36x = 18,339.30 × 7,321.01
  4. Step 4: Simplify right side
    13,289.36x = 134,262,107.00
  5. Step 5: Solve for x
    x = 134,262,107.00/13,289.36
  6. Step 6: Final answer
    x = 10,102.98

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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.