Home / 20,292.37-27,980.68-13,112.83

Finding the Fourth Proportional to 20,292.37, 27,980.68 and 13,112.83

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Solution

The fourth proportional to 20,292.37, 27,980.68 and 13,112.83 is: 18,080.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,292.37 : 27,980.68 = 13,112.83 : x
  2. Step 2: Convert to fraction form
    20,292.37/27,980.68 = 13,112.83/x
  3. Step 3: Cross multiply
    20,292.37x = 27,980.68 × 13,112.83
  4. Step 4: Simplify right side
    20,292.37x = 366,905,900.12
  5. Step 5: Solve for x
    x = 366,905,900.12/20,292.37
  6. Step 6: Final answer
    x = 18,080.98

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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.