Home / 13,015.72-17,961.60-7,047.37

Finding the Fourth Proportional to 13,015.72, 17,961.60 and 7,047.37

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Solution

The fourth proportional to 13,015.72, 17,961.60 and 7,047.37 is: 9,725.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,015.72 : 17,961.60 = 7,047.37 : x
  2. Step 2: Convert to fraction form
    13,015.72/17,961.60 = 7,047.37/x
  3. Step 3: Cross multiply
    13,015.72x = 17,961.60 × 7,047.37
  4. Step 4: Simplify right side
    13,015.72x = 126,582,040.99
  5. Step 5: Solve for x
    x = 126,582,040.99/13,015.72
  6. Step 6: Final answer
    x = 9,725.32

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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.