Home / 15,391.10-23,087.37-7,990.88

Finding the Fourth Proportional to 15,391.10, 23,087.37 and 7,990.88

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Solution

The fourth proportional to 15,391.10, 23,087.37 and 7,990.88 is: 11,986.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,391.10 : 23,087.37 = 7,990.88 : x
  2. Step 2: Convert to fraction form
    15,391.10/23,087.37 = 7,990.88/x
  3. Step 3: Cross multiply
    15,391.10x = 23,087.37 × 7,990.88
  4. Step 4: Simplify right side
    15,391.10x = 184,488,403.19
  5. Step 5: Solve for x
    x = 184,488,403.19/15,391.10
  6. Step 6: Final answer
    x = 11,986.69

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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.