Home / 20,079.23-30,085.99-12,157.74

Finding the Fourth Proportional to 20,079.23, 30,085.99 and 12,157.74

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Solution

The fourth proportional to 20,079.23, 30,085.99 and 12,157.74 is: 18,216.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.23 : 30,085.99 = 12,157.74 : x
  2. Step 2: Convert to fraction form
    20,079.23/30,085.99 = 12,157.74/x
  3. Step 3: Cross multiply
    20,079.23x = 30,085.99 × 12,157.74
  4. Step 4: Simplify right side
    20,079.23x = 365,777,613.67
  5. Step 5: Solve for x
    x = 365,777,613.67/20,079.23
  6. Step 6: Final answer
    x = 18,216.72

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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.