Home / 20,364.76-28,104.70-11,411.96

Finding the Fourth Proportional to 20,364.76, 28,104.70 and 11,411.96

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Solution

The fourth proportional to 20,364.76, 28,104.70 and 11,411.96 is: 15,749.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,364.76 : 28,104.70 = 11,411.96 : x
  2. Step 2: Convert to fraction form
    20,364.76/28,104.70 = 11,411.96/x
  3. Step 3: Cross multiply
    20,364.76x = 28,104.70 × 11,411.96
  4. Step 4: Simplify right side
    20,364.76x = 320,729,712.21
  5. Step 5: Solve for x
    x = 320,729,712.21/20,364.76
  6. Step 6: Final answer
    x = 15,749.25

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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.