Home / 13,956.57-19,259.37-7,986.87

Finding the Fourth Proportional to 13,956.57, 19,259.37 and 7,986.87

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Solution

The fourth proportional to 13,956.57, 19,259.37 and 7,986.87 is: 11,021.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,956.57 : 19,259.37 = 7,986.87 : x
  2. Step 2: Convert to fraction form
    13,956.57/19,259.37 = 7,986.87/x
  3. Step 3: Cross multiply
    13,956.57x = 19,259.37 × 7,986.87
  4. Step 4: Simplify right side
    13,956.57x = 153,822,084.47
  5. Step 5: Solve for x
    x = 153,822,084.47/13,956.57
  6. Step 6: Final answer
    x = 11,021.48

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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.