Home / 18,749.92-28,126.80-7,072.96

Finding the Fourth Proportional to 18,749.92, 28,126.80 and 7,072.96

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Solution

The fourth proportional to 18,749.92, 28,126.80 and 7,072.96 is: 10,610.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,749.92 : 28,126.80 = 7,072.96 : x
  2. Step 2: Convert to fraction form
    18,749.92/28,126.80 = 7,072.96/x
  3. Step 3: Cross multiply
    18,749.92x = 28,126.80 × 7,072.96
  4. Step 4: Simplify right side
    18,749.92x = 198,939,731.33
  5. Step 5: Solve for x
    x = 198,939,731.33/18,749.92
  6. Step 6: Final answer
    x = 10,610.16

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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.