Home / 20,326.10-30,495.31-8,485.58

Finding the Fourth Proportional to 20,326.10, 30,495.31 and 8,485.58

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Solution

The fourth proportional to 20,326.10, 30,495.31 and 8,485.58 is: 12,730.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,326.10 : 30,495.31 = 8,485.58 : x
  2. Step 2: Convert to fraction form
    20,326.10/30,495.31 = 8,485.58/x
  3. Step 3: Cross multiply
    20,326.10x = 30,495.31 × 8,485.58
  4. Step 4: Simplify right side
    20,326.10x = 258,770,392.63
  5. Step 5: Solve for x
    x = 258,770,392.63/20,326.10
  6. Step 6: Final answer
    x = 12,730.94

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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.