Home / 18,930.24-28,387.26-8,400.24

Finding the Fourth Proportional to 18,930.24, 28,387.26 and 8,400.24

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Solution

The fourth proportional to 18,930.24, 28,387.26 and 8,400.24 is: 12,596.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,930.24 : 28,387.26 = 8,400.24 : x
  2. Step 2: Convert to fraction form
    18,930.24/28,387.26 = 8,400.24/x
  3. Step 3: Cross multiply
    18,930.24x = 28,387.26 × 8,400.24
  4. Step 4: Simplify right side
    18,930.24x = 238,459,796.94
  5. Step 5: Solve for x
    x = 238,459,796.94/18,930.24
  6. Step 6: Final answer
    x = 12,596.77

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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.