Home / 13,811.64-20,702.52-6,783.48

Finding the Fourth Proportional to 13,811.64, 20,702.52 and 6,783.48

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Solution

The fourth proportional to 13,811.64, 20,702.52 and 6,783.48 is: 10,167.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,811.64 : 20,702.52 = 6,783.48 : x
  2. Step 2: Convert to fraction form
    13,811.64/20,702.52 = 6,783.48/x
  3. Step 3: Cross multiply
    13,811.64x = 20,702.52 × 6,783.48
  4. Step 4: Simplify right side
    13,811.64x = 140,435,130.37
  5. Step 5: Solve for x
    x = 140,435,130.37/13,811.64
  6. Step 6: Final answer
    x = 10,167.88

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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.