Home / 28,659.96-42,981.60-12,019.56

Finding the Fourth Proportional to 28,659.96, 42,981.60 and 12,019.56

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Solution

The fourth proportional to 28,659.96, 42,981.60 and 12,019.56 is: 18,025.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,659.96 : 42,981.60 = 12,019.56 : x
  2. Step 2: Convert to fraction form
    28,659.96/42,981.60 = 12,019.56/x
  3. Step 3: Cross multiply
    28,659.96x = 42,981.60 × 12,019.56
  4. Step 4: Simplify right side
    28,659.96x = 516,619,920.10
  5. Step 5: Solve for x
    x = 516,619,920.10/28,659.96
  6. Step 6: Final answer
    x = 18,025.84

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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.