Home / 12,321.37-18,489.93-4,423.71

Finding the Fourth Proportional to 12,321.37, 18,489.93 and 4,423.71

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Solution

The fourth proportional to 12,321.37, 18,489.93 and 4,423.71 is: 6,638.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,321.37 : 18,489.93 = 4,423.71 : x
  2. Step 2: Convert to fraction form
    12,321.37/18,489.93 = 4,423.71/x
  3. Step 3: Cross multiply
    12,321.37x = 18,489.93 × 4,423.71
  4. Step 4: Simplify right side
    12,321.37x = 81,794,088.24
  5. Step 5: Solve for x
    x = 81,794,088.24/12,321.37
  6. Step 6: Final answer
    x = 6,638.39

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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.