Home / 20,795.42-31,200.88-12,481.40

Finding the Fourth Proportional to 20,795.42, 31,200.88 and 12,481.40

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Solution

The fourth proportional to 20,795.42, 31,200.88 and 12,481.40 is: 18,726.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,795.42 : 31,200.88 = 12,481.40 : x
  2. Step 2: Convert to fraction form
    20,795.42/31,200.88 = 12,481.40/x
  3. Step 3: Cross multiply
    20,795.42x = 31,200.88 × 12,481.40
  4. Step 4: Simplify right side
    20,795.42x = 389,430,663.63
  5. Step 5: Solve for x
    x = 389,430,663.63/20,795.42
  6. Step 6: Final answer
    x = 18,726.75

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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.