Home / 20,493.51-28,276.02-13,674.12

Finding the Fourth Proportional to 20,493.51, 28,276.02 and 13,674.12

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Solution

The fourth proportional to 20,493.51, 28,276.02 and 13,674.12 is: 18,866.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,493.51 : 28,276.02 = 13,674.12 : x
  2. Step 2: Convert to fraction form
    20,493.51/28,276.02 = 13,674.12/x
  3. Step 3: Cross multiply
    20,493.51x = 28,276.02 × 13,674.12
  4. Step 4: Simplify right side
    20,493.51x = 386,649,584.57
  5. Step 5: Solve for x
    x = 386,649,584.57/20,493.51
  6. Step 6: Final answer
    x = 18,866.93

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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.