Home / 15,678.37-23,517.19-3,991.60

Finding the Fourth Proportional to 15,678.37, 23,517.19 and 3,991.60

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Solution

The fourth proportional to 15,678.37, 23,517.19 and 3,991.60 is: 5,987.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,678.37 : 23,517.19 = 3,991.60 : x
  2. Step 2: Convert to fraction form
    15,678.37/23,517.19 = 3,991.60/x
  3. Step 3: Cross multiply
    15,678.37x = 23,517.19 × 3,991.60
  4. Step 4: Simplify right side
    15,678.37x = 93,871,215.60
  5. Step 5: Solve for x
    x = 93,871,215.60/15,678.37
  6. Step 6: Final answer
    x = 5,987.31

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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.