Home / 19,361.28-26,718.57-10,977.78

Finding the Fourth Proportional to 19,361.28, 26,718.57 and 10,977.78

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Solution

The fourth proportional to 19,361.28, 26,718.57 and 10,977.78 is: 15,149.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,361.28 : 26,718.57 = 10,977.78 : x
  2. Step 2: Convert to fraction form
    19,361.28/26,718.57 = 10,977.78/x
  3. Step 3: Cross multiply
    19,361.28x = 26,718.57 × 10,977.78
  4. Step 4: Simplify right side
    19,361.28x = 293,310,583.37
  5. Step 5: Solve for x
    x = 293,310,583.37/19,361.28
  6. Step 6: Final answer
    x = 15,149.34

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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.