Home / 20,634.35-28,463.67-12,670.97

Finding the Fourth Proportional to 20,634.35, 28,463.67 and 12,670.97

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Solution

The fourth proportional to 20,634.35, 28,463.67 and 12,670.97 is: 17,478.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,634.35 : 28,463.67 = 12,670.97 : x
  2. Step 2: Convert to fraction form
    20,634.35/28,463.67 = 12,670.97/x
  3. Step 3: Cross multiply
    20,634.35x = 28,463.67 × 12,670.97
  4. Step 4: Simplify right side
    20,634.35x = 360,662,166.34
  5. Step 5: Solve for x
    x = 360,662,166.34/20,634.35
  6. Step 6: Final answer
    x = 17,478.73

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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.