Home / 20,695.66-28,543.26-12,723.64

Finding the Fourth Proportional to 20,695.66, 28,543.26 and 12,723.64

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Solution

The fourth proportional to 20,695.66, 28,543.26 and 12,723.64 is: 17,548.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.66 : 28,543.26 = 12,723.64 : x
  2. Step 2: Convert to fraction form
    20,695.66/28,543.26 = 12,723.64/x
  3. Step 3: Cross multiply
    20,695.66x = 28,543.26 × 12,723.64
  4. Step 4: Simplify right side
    20,695.66x = 363,174,164.67
  5. Step 5: Solve for x
    x = 363,174,164.67/20,695.66
  6. Step 6: Final answer
    x = 17,548.32

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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.