Home / 20,946-28,905.54-11,514.63

Finding the Fourth Proportional to 20,946, 28,905.54 and 11,514.63

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Solution

The fourth proportional to 20,946, 28,905.54 and 11,514.63 is: 15,890.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946 : 28,905.54 = 11,514.63 : x
  2. Step 2: Convert to fraction form
    20,946/28,905.54 = 11,514.63/x
  3. Step 3: Cross multiply
    20,946x = 28,905.54 × 11,514.63
  4. Step 4: Simplify right side
    20,946x = 332,836,598.05
  5. Step 5: Solve for x
    x = 332,836,598.05/20,946
  6. Step 6: Final answer
    x = 15,890.22

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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.