Home / 20,551.69-28,361.43-11,599.57

Finding the Fourth Proportional to 20,551.69, 28,361.43 and 11,599.57

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Solution

The fourth proportional to 20,551.69, 28,361.43 and 11,599.57 is: 16,007.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,551.69 : 28,361.43 = 11,599.57 : x
  2. Step 2: Convert to fraction form
    20,551.69/28,361.43 = 11,599.57/x
  3. Step 3: Cross multiply
    20,551.69x = 28,361.43 × 11,599.57
  4. Step 4: Simplify right side
    20,551.69x = 328,980,392.59
  5. Step 5: Solve for x
    x = 328,980,392.59/20,551.69
  6. Step 6: Final answer
    x = 16,007.46

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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.