Home / 20,189.52-30,264.84-12,771.36

Finding the Fourth Proportional to 20,189.52, 30,264.84 and 12,771.36

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Solution

The fourth proportional to 20,189.52, 30,264.84 and 12,771.36 is: 19,144.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.52 : 30,264.84 = 12,771.36 : x
  2. Step 2: Convert to fraction form
    20,189.52/30,264.84 = 12,771.36/x
  3. Step 3: Cross multiply
    20,189.52x = 30,264.84 × 12,771.36
  4. Step 4: Simplify right side
    20,189.52x = 386,523,166.98
  5. Step 5: Solve for x
    x = 386,523,166.98/20,189.52
  6. Step 6: Final answer
    x = 19,144.74

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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.