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Finding the Fourth Proportional to 15,076.63, 20,806.68 and 8,364.34

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Solution

The fourth proportional to 15,076.63, 20,806.68 and 8,364.34 is: 11,543.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,076.63 : 20,806.68 = 8,364.34 : x
  2. Step 2: Convert to fraction form
    15,076.63/20,806.68 = 8,364.34/x
  3. Step 3: Cross multiply
    15,076.63x = 20,806.68 × 8,364.34
  4. Step 4: Simplify right side
    15,076.63x = 174,034,145.79
  5. Step 5: Solve for x
    x = 174,034,145.79/15,076.63
  6. Step 6: Final answer
    x = 11,543.31

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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.