Home / 20,573.73-28,392.27-12,620.34

Finding the Fourth Proportional to 20,573.73, 28,392.27 and 12,620.34

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Solution

The fourth proportional to 20,573.73, 28,392.27 and 12,620.34 is: 17,416.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,573.73 : 28,392.27 = 12,620.34 : x
  2. Step 2: Convert to fraction form
    20,573.73/28,392.27 = 12,620.34/x
  3. Step 3: Cross multiply
    20,573.73x = 28,392.27 × 12,620.34
  4. Step 4: Simplify right side
    20,573.73x = 358,320,100.77
  5. Step 5: Solve for x
    x = 358,320,100.77/20,573.73
  6. Step 6: Final answer
    x = 17,416.39

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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.