Home / 18,980.06-26,190.49-11,020.73

Finding the Fourth Proportional to 18,980.06, 26,190.49 and 11,020.73

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Solution

The fourth proportional to 18,980.06, 26,190.49 and 11,020.73 is: 15,207.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,980.06 : 26,190.49 = 11,020.73 : x
  2. Step 2: Convert to fraction form
    18,980.06/26,190.49 = 11,020.73/x
  3. Step 3: Cross multiply
    18,980.06x = 26,190.49 × 11,020.73
  4. Step 4: Simplify right side
    18,980.06x = 288,638,318.86
  5. Step 5: Solve for x
    x = 288,638,318.86/18,980.06
  6. Step 6: Final answer
    x = 15,207.45

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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.