Home / 40,709.35-61,072.74-12,628.80

Finding the Fourth Proportional to 40,709.35, 61,072.74 and 12,628.80

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Solution

The fourth proportional to 40,709.35, 61,072.74 and 12,628.80 is: 18,945.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,709.35 : 61,072.74 = 12,628.80 : x
  2. Step 2: Convert to fraction form
    40,709.35/61,072.74 = 12,628.80/x
  3. Step 3: Cross multiply
    40,709.35x = 61,072.74 × 12,628.80
  4. Step 4: Simplify right side
    40,709.35x = 771,275,418.91
  5. Step 5: Solve for x
    x = 771,275,418.91/40,709.35
  6. Step 6: Final answer
    x = 18,945.90

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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.