Home / 14,090.70-19,440.74-8,121.54

Finding the Fourth Proportional to 14,090.70, 19,440.74 and 8,121.54

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Solution

The fourth proportional to 14,090.70, 19,440.74 and 8,121.54 is: 11,205.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,090.70 : 19,440.74 = 8,121.54 : x
  2. Step 2: Convert to fraction form
    14,090.70/19,440.74 = 8,121.54/x
  3. Step 3: Cross multiply
    14,090.70x = 19,440.74 × 8,121.54
  4. Step 4: Simplify right side
    14,090.70x = 157,888,747.54
  5. Step 5: Solve for x
    x = 157,888,747.54/14,090.70
  6. Step 6: Final answer
    x = 11,205.17

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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.