Home / 13,786.86-19,024.32-8,121.24

Finding the Fourth Proportional to 13,786.86, 19,024.32 and 8,121.24

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Solution

The fourth proportional to 13,786.86, 19,024.32 and 8,121.24 is: 11,206.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,786.86 : 19,024.32 = 8,121.24 : x
  2. Step 2: Convert to fraction form
    13,786.86/19,024.32 = 8,121.24/x
  3. Step 3: Cross multiply
    13,786.86x = 19,024.32 × 8,121.24
  4. Step 4: Simplify right side
    13,786.86x = 154,500,999.82
  5. Step 5: Solve for x
    x = 154,500,999.82/13,786.86
  6. Step 6: Final answer
    x = 11,206.40

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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.