Home / 20,538.26-30,865.15-12,219.76

Finding the Fourth Proportional to 20,538.26, 30,865.15 and 12,219.76

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Solution

The fourth proportional to 20,538.26, 30,865.15 and 12,219.76 is: 18,364.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538.26 : 30,865.15 = 12,219.76 : x
  2. Step 2: Convert to fraction form
    20,538.26/30,865.15 = 12,219.76/x
  3. Step 3: Cross multiply
    20,538.26x = 30,865.15 × 12,219.76
  4. Step 4: Simplify right side
    20,538.26x = 377,164,779.22
  5. Step 5: Solve for x
    x = 377,164,779.22/20,538.26
  6. Step 6: Final answer
    x = 18,364.01

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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.