Home / 13,638.02-20,464.92-5,739.92

Finding the Fourth Proportional to 13,638.02, 20,464.92 and 5,739.92

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Solution

The fourth proportional to 13,638.02, 20,464.92 and 5,739.92 is: 8,613.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,638.02 : 20,464.92 = 5,739.92 : x
  2. Step 2: Convert to fraction form
    13,638.02/20,464.92 = 5,739.92/x
  3. Step 3: Cross multiply
    13,638.02x = 20,464.92 × 5,739.92
  4. Step 4: Simplify right side
    13,638.02x = 117,467,003.61
  5. Step 5: Solve for x
    x = 117,467,003.61/13,638.02
  6. Step 6: Final answer
    x = 8,613.20

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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.