Home / 15,395.18-21,242.66-9,105.26

Finding the Fourth Proportional to 15,395.18, 21,242.66 and 9,105.26

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Solution

The fourth proportional to 15,395.18, 21,242.66 and 9,105.26 is: 12,563.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,395.18 : 21,242.66 = 9,105.26 : x
  2. Step 2: Convert to fraction form
    15,395.18/21,242.66 = 9,105.26/x
  3. Step 3: Cross multiply
    15,395.18x = 21,242.66 × 9,105.26
  4. Step 4: Simplify right side
    15,395.18x = 193,419,942.39
  5. Step 5: Solve for x
    x = 193,419,942.39/15,395.18
  6. Step 6: Final answer
    x = 12,563.67

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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.