Home / 20,451.88-30,670.26-12,133.72

Finding the Fourth Proportional to 20,451.88, 30,670.26 and 12,133.72

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Solution

The fourth proportional to 20,451.88, 30,670.26 and 12,133.72 is: 18,196.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,451.88 : 30,670.26 = 12,133.72 : x
  2. Step 2: Convert to fraction form
    20,451.88/30,670.26 = 12,133.72/x
  3. Step 3: Cross multiply
    20,451.88x = 30,670.26 × 12,133.72
  4. Step 4: Simplify right side
    20,451.88x = 372,144,347.17
  5. Step 5: Solve for x
    x = 372,144,347.17/20,451.88
  6. Step 6: Final answer
    x = 18,196.09

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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.