Home / 20,946.47-28,905.39-11,514.96

Finding the Fourth Proportional to 20,946.47, 28,905.39 and 11,514.96

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Solution

The fourth proportional to 20,946.47, 28,905.39 and 11,514.96 is: 15,890.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946.47 : 28,905.39 = 11,514.96 : x
  2. Step 2: Convert to fraction form
    20,946.47/28,905.39 = 11,514.96/x
  3. Step 3: Cross multiply
    20,946.47x = 28,905.39 × 11,514.96
  4. Step 4: Simplify right side
    20,946.47x = 332,844,409.63
  5. Step 5: Solve for x
    x = 332,844,409.63/20,946.47
  6. Step 6: Final answer
    x = 15,890.24

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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.