Home / 20,512.80-30,767.60-8,030.40

Finding the Fourth Proportional to 20,512.80, 30,767.60 and 8,030.40

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Solution

The fourth proportional to 20,512.80, 30,767.60 and 8,030.40 is: 12,044.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.80 : 30,767.60 = 8,030.40 : x
  2. Step 2: Convert to fraction form
    20,512.80/30,767.60 = 8,030.40/x
  3. Step 3: Cross multiply
    20,512.80x = 30,767.60 × 8,030.40
  4. Step 4: Simplify right side
    20,512.80x = 247,076,135.04
  5. Step 5: Solve for x
    x = 247,076,135.04/20,512.80
  6. Step 6: Final answer
    x = 12,044.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.