Home / 11,947.20-17,923.20-10,012.80

Finding the Fourth Proportional to 11,947.20, 17,923.20 and 10,012.80

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Solution

The fourth proportional to 11,947.20, 17,923.20 and 10,012.80 is: 15,021.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,947.20 : 17,923.20 = 10,012.80 : x
  2. Step 2: Convert to fraction form
    11,947.20/17,923.20 = 10,012.80/x
  3. Step 3: Cross multiply
    11,947.20x = 17,923.20 × 10,012.80
  4. Step 4: Simplify right side
    11,947.20x = 179,461,416.96
  5. Step 5: Solve for x
    x = 179,461,416.96/11,947.20
  6. Step 6: Final answer
    x = 15,021.21

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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.