Home / 12,675.60-18,989.19-7,112.07

Finding the Fourth Proportional to 12,675.60, 18,989.19 and 7,112.07

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Solution

The fourth proportional to 12,675.60, 18,989.19 and 7,112.07 is: 10,654.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,675.60 : 18,989.19 = 7,112.07 : x
  2. Step 2: Convert to fraction form
    12,675.60/18,989.19 = 7,112.07/x
  3. Step 3: Cross multiply
    12,675.60x = 18,989.19 × 7,112.07
  4. Step 4: Simplify right side
    12,675.60x = 135,052,448.52
  5. Step 5: Solve for x
    x = 135,052,448.52/12,675.60
  6. Step 6: Final answer
    x = 10,654.52

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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.