Home / 20,807.88-28,727.58-13,546.86

Finding the Fourth Proportional to 20,807.88, 28,727.58 and 13,546.86

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Solution

The fourth proportional to 20,807.88, 28,727.58 and 13,546.86 is: 18,702.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,807.88 : 28,727.58 = 13,546.86 : x
  2. Step 2: Convert to fraction form
    20,807.88/28,727.58 = 13,546.86/x
  3. Step 3: Cross multiply
    20,807.88x = 28,727.58 × 13,546.86
  4. Step 4: Simplify right side
    20,807.88x = 389,168,504.40
  5. Step 5: Solve for x
    x = 389,168,504.40/20,807.88
  6. Step 6: Final answer
    x = 18,702.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.