Home / 19,857.06-27,403.22-10,782.80

Finding the Fourth Proportional to 19,857.06, 27,403.22 and 10,782.80

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Solution

The fourth proportional to 19,857.06, 27,403.22 and 10,782.80 is: 14,880.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,857.06 : 27,403.22 = 10,782.80 : x
  2. Step 2: Convert to fraction form
    19,857.06/27,403.22 = 10,782.80/x
  3. Step 3: Cross multiply
    19,857.06x = 27,403.22 × 10,782.80
  4. Step 4: Simplify right side
    19,857.06x = 295,483,249.69
  5. Step 5: Solve for x
    x = 295,483,249.69/19,857.06
  6. Step 6: Final answer
    x = 14,880.51

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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.