Home / 20,684.63-28,573.86-18,445.79

Finding the Fourth Proportional to 20,684.63, 28,573.86 and 18,445.79

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Solution

The fourth proportional to 20,684.63, 28,573.86 and 18,445.79 is: 25,481.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684.63 : 28,573.86 = 18,445.79 : x
  2. Step 2: Convert to fraction form
    20,684.63/28,573.86 = 18,445.79/x
  3. Step 3: Cross multiply
    20,684.63x = 28,573.86 × 18,445.79
  4. Step 4: Simplify right side
    20,684.63x = 527,067,561.66
  5. Step 5: Solve for x
    x = 527,067,561.66/20,684.63
  6. Step 6: Final answer
    x = 25,481.12

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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.