Home / 28,660.39-42,976.74-12,015.96

Finding the Fourth Proportional to 28,660.39, 42,976.74 and 12,015.96

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Solution

The fourth proportional to 28,660.39, 42,976.74 and 12,015.96 is: 18,018.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,660.39 : 42,976.74 = 12,015.96 : x
  2. Step 2: Convert to fraction form
    28,660.39/42,976.74 = 12,015.96/x
  3. Step 3: Cross multiply
    28,660.39x = 42,976.74 × 12,015.96
  4. Step 4: Simplify right side
    28,660.39x = 516,406,788.77
  5. Step 5: Solve for x
    x = 516,406,788.77/28,660.39
  6. Step 6: Final answer
    x = 18,018.14

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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.