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Finding the Fourth Proportional to 20,543.60, 30,793.80 and 8,058.80

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Solution

The fourth proportional to 20,543.60, 30,793.80 and 8,058.80 is: 12,079.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,543.60 : 30,793.80 = 8,058.80 : x
  2. Step 2: Convert to fraction form
    20,543.60/30,793.80 = 8,058.80/x
  3. Step 3: Cross multiply
    20,543.60x = 30,793.80 × 8,058.80
  4. Step 4: Simplify right side
    20,543.60x = 248,161,075.44
  5. Step 5: Solve for x
    x = 248,161,075.44/20,543.60
  6. Step 6: Final answer
    x = 12,079.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.