Home / 20,777.41-28,654.73-13,506.42

Finding the Fourth Proportional to 20,777.41, 28,654.73 and 13,506.42

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Solution

The fourth proportional to 20,777.41, 28,654.73 and 13,506.42 is: 18,627.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,777.41 : 28,654.73 = 13,506.42 : x
  2. Step 2: Convert to fraction form
    20,777.41/28,654.73 = 13,506.42/x
  3. Step 3: Cross multiply
    20,777.41x = 28,654.73 × 13,506.42
  4. Step 4: Simplify right side
    20,777.41x = 387,022,984.91
  5. Step 5: Solve for x
    x = 387,022,984.91/20,777.41
  6. Step 6: Final answer
    x = 18,627.11

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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.