Home / 18,789.37-28,170.71-9,422.63

Finding the Fourth Proportional to 18,789.37, 28,170.71 and 9,422.63

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Solution

The fourth proportional to 18,789.37, 28,170.71 and 9,422.63 is: 14,127.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,789.37 : 28,170.71 = 9,422.63 : x
  2. Step 2: Convert to fraction form
    18,789.37/28,170.71 = 9,422.63/x
  3. Step 3: Cross multiply
    18,789.37x = 28,170.71 × 9,422.63
  4. Step 4: Simplify right side
    18,789.37x = 265,442,130.05
  5. Step 5: Solve for x
    x = 265,442,130.05/18,789.37
  6. Step 6: Final answer
    x = 14,127.25

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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.