Home / 14,091.78-21,138.87-3,703.50

Finding the Fourth Proportional to 14,091.78, 21,138.87 and 3,703.50

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Solution

The fourth proportional to 14,091.78, 21,138.87 and 3,703.50 is: 5,555.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,091.78 : 21,138.87 = 3,703.50 : x
  2. Step 2: Convert to fraction form
    14,091.78/21,138.87 = 3,703.50/x
  3. Step 3: Cross multiply
    14,091.78x = 21,138.87 × 3,703.50
  4. Step 4: Simplify right side
    14,091.78x = 78,287,805.05
  5. Step 5: Solve for x
    x = 78,287,805.05/14,091.78
  6. Step 6: Final answer
    x = 5,555.57

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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.