Home / 13,854.93-20,777.67-3,991.56

Finding the Fourth Proportional to 13,854.93, 20,777.67 and 3,991.56

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Solution

The fourth proportional to 13,854.93, 20,777.67 and 3,991.56 is: 5,985.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,854.93 : 20,777.67 = 3,991.56 : x
  2. Step 2: Convert to fraction form
    13,854.93/20,777.67 = 3,991.56/x
  3. Step 3: Cross multiply
    13,854.93x = 20,777.67 × 3,991.56
  4. Step 4: Simplify right side
    13,854.93x = 82,935,316.47
  5. Step 5: Solve for x
    x = 82,935,316.47/13,854.93
  6. Step 6: Final answer
    x = 5,985.98

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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.