Home / 13,211.16-19,814.58-3,975

Finding the Fourth Proportional to 13,211.16, 19,814.58 and 3,975

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Solution

The fourth proportional to 13,211.16, 19,814.58 and 3,975 is: 5,961.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,211.16 : 19,814.58 = 3,975 : x
  2. Step 2: Convert to fraction form
    13,211.16/19,814.58 = 3,975/x
  3. Step 3: Cross multiply
    13,211.16x = 19,814.58 × 3,975
  4. Step 4: Simplify right side
    13,211.16x = 78,762,955.50
  5. Step 5: Solve for x
    x = 78,762,955.50/13,211.16
  6. Step 6: Final answer
    x = 5,961.85

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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.