Home / 13,667.40-18,859.62-7,698.12

Finding the Fourth Proportional to 13,667.40, 18,859.62 and 7,698.12

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Solution

The fourth proportional to 13,667.40, 18,859.62 and 7,698.12 is: 10,622.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,667.40 : 18,859.62 = 7,698.12 : x
  2. Step 2: Convert to fraction form
    13,667.40/18,859.62 = 7,698.12/x
  3. Step 3: Cross multiply
    13,667.40x = 18,859.62 × 7,698.12
  4. Step 4: Simplify right side
    13,667.40x = 145,183,617.91
  5. Step 5: Solve for x
    x = 145,183,617.91/13,667.40
  6. Step 6: Final answer
    x = 10,622.62

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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.