Home / 19,621.88-27,076.43-10,890.77

Finding the Fourth Proportional to 19,621.88, 27,076.43 and 10,890.77

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Solution

The fourth proportional to 19,621.88, 27,076.43 and 10,890.77 is: 15,028.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,621.88 : 27,076.43 = 10,890.77 : x
  2. Step 2: Convert to fraction form
    19,621.88/27,076.43 = 10,890.77/x
  3. Step 3: Cross multiply
    19,621.88x = 27,076.43 × 10,890.77
  4. Step 4: Simplify right side
    19,621.88x = 294,882,981.72
  5. Step 5: Solve for x
    x = 294,882,981.72/19,621.88
  6. Step 6: Final answer
    x = 15,028.28

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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.