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Finding the Fourth Proportional to 12,287.58, 18,431.37 and 3,053.58

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Solution

The fourth proportional to 12,287.58, 18,431.37 and 3,053.58 is: 4,580.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,287.58 : 18,431.37 = 3,053.58 : x
  2. Step 2: Convert to fraction form
    12,287.58/18,431.37 = 3,053.58/x
  3. Step 3: Cross multiply
    12,287.58x = 18,431.37 × 3,053.58
  4. Step 4: Simplify right side
    12,287.58x = 56,281,662.80
  5. Step 5: Solve for x
    x = 56,281,662.80/12,287.58
  6. Step 6: Final answer
    x = 4,580.37

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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.