Home / 21,748.28-30,014.74-12,189.79

Finding the Fourth Proportional to 21,748.28, 30,014.74 and 12,189.79

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Solution

The fourth proportional to 21,748.28, 30,014.74 and 12,189.79 is: 16,823.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,748.28 : 30,014.74 = 12,189.79 : x
  2. Step 2: Convert to fraction form
    21,748.28/30,014.74 = 12,189.79/x
  3. Step 3: Cross multiply
    21,748.28x = 30,014.74 × 12,189.79
  4. Step 4: Simplify right side
    21,748.28x = 365,873,361.69
  5. Step 5: Solve for x
    x = 365,873,361.69/21,748.28
  6. Step 6: Final answer
    x = 16,823.09

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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.