Home / 13,865.46-19,134.21-7,817.64

Finding the Fourth Proportional to 13,865.46, 19,134.21 and 7,817.64

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Solution

The fourth proportional to 13,865.46, 19,134.21 and 7,817.64 is: 10,788.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.46 : 19,134.21 = 7,817.64 : x
  2. Step 2: Convert to fraction form
    13,865.46/19,134.21 = 7,817.64/x
  3. Step 3: Cross multiply
    13,865.46x = 19,134.21 × 7,817.64
  4. Step 4: Simplify right side
    13,865.46x = 149,584,365.46
  5. Step 5: Solve for x
    x = 149,584,365.46/13,865.46
  6. Step 6: Final answer
    x = 10,788.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.