Home / 20,675.60-28,536.44-12,290.48

Finding the Fourth Proportional to 20,675.60, 28,536.44 and 12,290.48

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Solution

The fourth proportional to 20,675.60, 28,536.44 and 12,290.48 is: 16,963.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,675.60 : 28,536.44 = 12,290.48 : x
  2. Step 2: Convert to fraction form
    20,675.60/28,536.44 = 12,290.48/x
  3. Step 3: Cross multiply
    20,675.60x = 28,536.44 × 12,290.48
  4. Step 4: Simplify right side
    20,675.60x = 350,726,545.09
  5. Step 5: Solve for x
    x = 350,726,545.09/20,675.60
  6. Step 6: Final answer
    x = 16,963.31

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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.