Home / 21,758.87-30,027.23-12,327.42

Finding the Fourth Proportional to 21,758.87, 30,027.23 and 12,327.42

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Solution

The fourth proportional to 21,758.87, 30,027.23 and 12,327.42 is: 17,011.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,758.87 : 30,027.23 = 12,327.42 : x
  2. Step 2: Convert to fraction form
    21,758.87/30,027.23 = 12,327.42/x
  3. Step 3: Cross multiply
    21,758.87x = 30,027.23 × 12,327.42
  4. Step 4: Simplify right side
    21,758.87x = 370,158,214.01
  5. Step 5: Solve for x
    x = 370,158,214.01/21,758.87
  6. Step 6: Final answer
    x = 17,011.83

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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.