Home / 15,991.22-23,989.57-7,109.72

Finding the Fourth Proportional to 15,991.22, 23,989.57 and 7,109.72

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Solution

The fourth proportional to 15,991.22, 23,989.57 and 7,109.72 is: 10,665.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,991.22 : 23,989.57 = 7,109.72 : x
  2. Step 2: Convert to fraction form
    15,991.22/23,989.57 = 7,109.72/x
  3. Step 3: Cross multiply
    15,991.22x = 23,989.57 × 7,109.72
  4. Step 4: Simplify right side
    15,991.22x = 170,559,212.80
  5. Step 5: Solve for x
    x = 170,559,212.80/15,991.22
  6. Step 6: Final answer
    x = 10,665.80

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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.