Home / 13,655.80-20,450.82-7,794.64

Finding the Fourth Proportional to 13,655.80, 20,450.82 and 7,794.64

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Solution

The fourth proportional to 13,655.80, 20,450.82 and 7,794.64 is: 11,673.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.80 : 20,450.82 = 7,794.64 : x
  2. Step 2: Convert to fraction form
    13,655.80/20,450.82 = 7,794.64/x
  3. Step 3: Cross multiply
    13,655.80x = 20,450.82 × 7,794.64
  4. Step 4: Simplify right side
    13,655.80x = 159,406,779.60
  5. Step 5: Solve for x
    x = 159,406,779.60/13,655.80
  6. Step 6: Final answer
    x = 11,673.19

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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.