Home / 13,375.72-20,076.36-6,455.08

Finding the Fourth Proportional to 13,375.72, 20,076.36 and 6,455.08

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Solution

The fourth proportional to 13,375.72, 20,076.36 and 6,455.08 is: 9,688.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,375.72 : 20,076.36 = 6,455.08 : x
  2. Step 2: Convert to fraction form
    13,375.72/20,076.36 = 6,455.08/x
  3. Step 3: Cross multiply
    13,375.72x = 20,076.36 × 6,455.08
  4. Step 4: Simplify right side
    13,375.72x = 129,594,509.91
  5. Step 5: Solve for x
    x = 129,594,509.91/13,375.72
  6. Step 6: Final answer
    x = 9,688.79

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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.