Home / 20,763.75-28,667.78-15,975.26

Finding the Fourth Proportional to 20,763.75, 28,667.78 and 15,975.26

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Solution

The fourth proportional to 20,763.75, 28,667.78 and 15,975.26 is: 22,056.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.75 : 28,667.78 = 15,975.26 : x
  2. Step 2: Convert to fraction form
    20,763.75/28,667.78 = 15,975.26/x
  3. Step 3: Cross multiply
    20,763.75x = 28,667.78 × 15,975.26
  4. Step 4: Simplify right side
    20,763.75x = 457,975,239.12
  5. Step 5: Solve for x
    x = 457,975,239.12/20,763.75
  6. Step 6: Final answer
    x = 22,056.48

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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.