Home / 20,677.35-28,502.78-12,704.55

Finding the Fourth Proportional to 20,677.35, 28,502.78 and 12,704.55

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Solution

The fourth proportional to 20,677.35, 28,502.78 and 12,704.55 is: 17,512.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,677.35 : 28,502.78 = 12,704.55 : x
  2. Step 2: Convert to fraction form
    20,677.35/28,502.78 = 12,704.55/x
  3. Step 3: Cross multiply
    20,677.35x = 28,502.78 × 12,704.55
  4. Step 4: Simplify right side
    20,677.35x = 362,114,930.13
  5. Step 5: Solve for x
    x = 362,114,930.13/20,677.35
  6. Step 6: Final answer
    x = 17,512.64

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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.