Home / 13,691.32-20,533.86-6,288.66

Finding the Fourth Proportional to 13,691.32, 20,533.86 and 6,288.66

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Solution

The fourth proportional to 13,691.32, 20,533.86 and 6,288.66 is: 9,431.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,691.32 : 20,533.86 = 6,288.66 : x
  2. Step 2: Convert to fraction form
    13,691.32/20,533.86 = 6,288.66/x
  3. Step 3: Cross multiply
    13,691.32x = 20,533.86 × 6,288.66
  4. Step 4: Simplify right side
    13,691.32x = 129,130,464.03
  5. Step 5: Solve for x
    x = 129,130,464.03/13,691.32
  6. Step 6: Final answer
    x = 9,431.56

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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.