Home / 12,489.12-18,735.52-4,699.76

Finding the Fourth Proportional to 12,489.12, 18,735.52 and 4,699.76

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Solution

The fourth proportional to 12,489.12, 18,735.52 and 4,699.76 is: 7,050.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489.12 : 18,735.52 = 4,699.76 : x
  2. Step 2: Convert to fraction form
    12,489.12/18,735.52 = 4,699.76/x
  3. Step 3: Cross multiply
    12,489.12x = 18,735.52 × 4,699.76
  4. Step 4: Simplify right side
    12,489.12x = 88,052,447.48
  5. Step 5: Solve for x
    x = 88,052,447.48/12,489.12
  6. Step 6: Final answer
    x = 7,050.33

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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.