Home / 20,340.96-28,056.03-18,667.77

Finding the Fourth Proportional to 20,340.96, 28,056.03 and 18,667.77

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Solution

The fourth proportional to 20,340.96, 28,056.03 and 18,667.77 is: 25,748.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,340.96 : 28,056.03 = 18,667.77 : x
  2. Step 2: Convert to fraction form
    20,340.96/28,056.03 = 18,667.77/x
  3. Step 3: Cross multiply
    20,340.96x = 28,056.03 × 18,667.77
  4. Step 4: Simplify right side
    20,340.96x = 523,743,515.15
  5. Step 5: Solve for x
    x = 523,743,515.15/20,340.96
  6. Step 6: Final answer
    x = 25,748.22

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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.