Home / 20,975.84-28,945.56-11,542.58

Finding the Fourth Proportional to 20,975.84, 28,945.56 and 11,542.58

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Solution

The fourth proportional to 20,975.84, 28,945.56 and 11,542.58 is: 15,928.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,975.84 : 28,945.56 = 11,542.58 : x
  2. Step 2: Convert to fraction form
    20,975.84/28,945.56 = 11,542.58/x
  3. Step 3: Cross multiply
    20,975.84x = 28,945.56 × 11,542.58
  4. Step 4: Simplify right side
    20,975.84x = 334,106,441.94
  5. Step 5: Solve for x
    x = 334,106,441.94/20,975.84
  6. Step 6: Final answer
    x = 15,928.16

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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.