Home / 19,111.35-28,663.70-5,072.80

Finding the Fourth Proportional to 19,111.35, 28,663.70 and 5,072.80

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Solution

The fourth proportional to 19,111.35, 28,663.70 and 5,072.80 is: 7,608.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,111.35 : 28,663.70 = 5,072.80 : x
  2. Step 2: Convert to fraction form
    19,111.35/28,663.70 = 5,072.80/x
  3. Step 3: Cross multiply
    19,111.35x = 28,663.70 × 5,072.80
  4. Step 4: Simplify right side
    19,111.35x = 145,405,217.36
  5. Step 5: Solve for x
    x = 145,405,217.36/19,111.35
  6. Step 6: Final answer
    x = 7,608.32

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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.