Home / 36,885.70-55,255.65-20,215.90

Finding the Fourth Proportional to 36,885.70, 55,255.65 and 20,215.90

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Solution

The fourth proportional to 36,885.70, 55,255.65 and 20,215.90 is: 30,283.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,885.70 : 55,255.65 = 20,215.90 : x
  2. Step 2: Convert to fraction form
    36,885.70/55,255.65 = 20,215.90/x
  3. Step 3: Cross multiply
    36,885.70x = 55,255.65 × 20,215.90
  4. Step 4: Simplify right side
    36,885.70x = 1,117,042,694.84
  5. Step 5: Solve for x
    x = 1,117,042,694.84/36,885.70
  6. Step 6: Final answer
    x = 30,283.90

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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.