Home / 11,420.08-17,130.62-3,928.80

Finding the Fourth Proportional to 11,420.08, 17,130.62 and 3,928.80

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Solution

The fourth proportional to 11,420.08, 17,130.62 and 3,928.80 is: 5,893.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,420.08 : 17,130.62 = 3,928.80 : x
  2. Step 2: Convert to fraction form
    11,420.08/17,130.62 = 3,928.80/x
  3. Step 3: Cross multiply
    11,420.08x = 17,130.62 × 3,928.80
  4. Step 4: Simplify right side
    11,420.08x = 67,302,779.86
  5. Step 5: Solve for x
    x = 67,302,779.86/11,420.08
  6. Step 6: Final answer
    x = 5,893.37

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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.