Home / 13,345.63-20,018.44-5,451.86

Finding the Fourth Proportional to 13,345.63, 20,018.44 and 5,451.86

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Solution

The fourth proportional to 13,345.63, 20,018.44 and 5,451.86 is: 8,177.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,345.63 : 20,018.44 = 5,451.86 : x
  2. Step 2: Convert to fraction form
    13,345.63/20,018.44 = 5,451.86/x
  3. Step 3: Cross multiply
    13,345.63x = 20,018.44 × 5,451.86
  4. Step 4: Simplify right side
    13,345.63x = 109,137,732.30
  5. Step 5: Solve for x
    x = 109,137,732.30/13,345.63
  6. Step 6: Final answer
    x = 8,177.79

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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.