Home / 13,005.75-17,940.65-7,972.41

Finding the Fourth Proportional to 13,005.75, 17,940.65 and 7,972.41

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Solution

The fourth proportional to 13,005.75, 17,940.65 and 7,972.41 is: 10,997.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,005.75 : 17,940.65 = 7,972.41 : x
  2. Step 2: Convert to fraction form
    13,005.75/17,940.65 = 7,972.41/x
  3. Step 3: Cross multiply
    13,005.75x = 17,940.65 × 7,972.41
  4. Step 4: Simplify right side
    13,005.75x = 143,030,177.60
  5. Step 5: Solve for x
    x = 143,030,177.60/13,005.75
  6. Step 6: Final answer
    x = 10,997.46

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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.