Home / 21,771.12-30,050.88-12,817.92

Finding the Fourth Proportional to 21,771.12, 30,050.88 and 12,817.92

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Solution

The fourth proportional to 21,771.12, 30,050.88 and 12,817.92 is: 17,692.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,771.12 : 30,050.88 = 12,817.92 : x
  2. Step 2: Convert to fraction form
    21,771.12/30,050.88 = 12,817.92/x
  3. Step 3: Cross multiply
    21,771.12x = 30,050.88 × 12,817.92
  4. Step 4: Simplify right side
    21,771.12x = 385,189,775.77
  5. Step 5: Solve for x
    x = 385,189,775.77/21,771.12
  6. Step 6: Final answer
    x = 17,692.69

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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.