Home / 18,878.33-28,278.62-11,068.31

Finding the Fourth Proportional to 18,878.33, 28,278.62 and 11,068.31

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Solution

The fourth proportional to 18,878.33, 28,278.62 and 11,068.31 is: 16,579.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,878.33 : 28,278.62 = 11,068.31 : x
  2. Step 2: Convert to fraction form
    18,878.33/28,278.62 = 11,068.31/x
  3. Step 3: Cross multiply
    18,878.33x = 28,278.62 × 11,068.31
  4. Step 4: Simplify right side
    18,878.33x = 312,996,589.39
  5. Step 5: Solve for x
    x = 312,996,589.39/18,878.33
  6. Step 6: Final answer
    x = 16,579.67

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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.