Home / 13,108.07-19,661.99-5,315.03

Finding the Fourth Proportional to 13,108.07, 19,661.99 and 5,315.03

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Solution

The fourth proportional to 13,108.07, 19,661.99 and 5,315.03 is: 7,972.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,108.07 : 19,661.99 = 5,315.03 : x
  2. Step 2: Convert to fraction form
    13,108.07/19,661.99 = 5,315.03/x
  3. Step 3: Cross multiply
    13,108.07x = 19,661.99 × 5,315.03
  4. Step 4: Simplify right side
    13,108.07x = 104,504,040.13
  5. Step 5: Solve for x
    x = 104,504,040.13/13,108.07
  6. Step 6: Final answer
    x = 7,972.50

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1.5x scale

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.