Home / 20,597.76-28,438.56-12,216.96

Finding the Fourth Proportional to 20,597.76, 28,438.56 and 12,216.96

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Solution

The fourth proportional to 20,597.76, 28,438.56 and 12,216.96 is: 16,867.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,597.76 : 28,438.56 = 12,216.96 : x
  2. Step 2: Convert to fraction form
    20,597.76/28,438.56 = 12,216.96/x
  3. Step 3: Cross multiply
    20,597.76x = 28,438.56 × 12,216.96
  4. Step 4: Simplify right side
    20,597.76x = 347,432,749.98
  5. Step 5: Solve for x
    x = 347,432,749.98/20,597.76
  6. Step 6: Final answer
    x = 16,867.50

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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.