Home / 18,739.09-28,100.38-9,971.92

Finding the Fourth Proportional to 18,739.09, 28,100.38 and 9,971.92

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Solution

The fourth proportional to 18,739.09, 28,100.38 and 9,971.92 is: 14,953.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,739.09 : 28,100.38 = 9,971.92 : x
  2. Step 2: Convert to fraction form
    18,739.09/28,100.38 = 9,971.92/x
  3. Step 3: Cross multiply
    18,739.09x = 28,100.38 × 9,971.92
  4. Step 4: Simplify right side
    18,739.09x = 280,214,741.33
  5. Step 5: Solve for x
    x = 280,214,741.33/18,739.09
  6. Step 6: Final answer
    x = 14,953.49

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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.