Home / 20,363.60-28,096.86-13,646.78

Finding the Fourth Proportional to 20,363.60, 28,096.86 and 13,646.78

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Solution

The fourth proportional to 20,363.60, 28,096.86 and 13,646.78 is: 18,829.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,363.60 : 28,096.86 = 13,646.78 : x
  2. Step 2: Convert to fraction form
    20,363.60/28,096.86 = 13,646.78/x
  3. Step 3: Cross multiply
    20,363.60x = 28,096.86 × 13,646.78
  4. Step 4: Simplify right side
    20,363.60x = 383,431,667.11
  5. Step 5: Solve for x
    x = 383,431,667.11/20,363.60
  6. Step 6: Final answer
    x = 18,829.27

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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.