Home / 28,520.28-42,744.78-13,725.24

Finding the Fourth Proportional to 28,520.28, 42,744.78 and 13,725.24

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Solution

The fourth proportional to 28,520.28, 42,744.78 and 13,725.24 is: 20,570.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,520.28 : 42,744.78 = 13,725.24 : x
  2. Step 2: Convert to fraction form
    28,520.28/42,744.78 = 13,725.24/x
  3. Step 3: Cross multiply
    28,520.28x = 42,744.78 × 13,725.24
  4. Step 4: Simplify right side
    28,520.28x = 586,682,364.25
  5. Step 5: Solve for x
    x = 586,682,364.25/28,520.28
  6. Step 6: Final answer
    x = 20,570.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.