Home / 12,615.63-18,923.45-3,381.87

Finding the Fourth Proportional to 12,615.63, 18,923.45 and 3,381.87

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Solution

The fourth proportional to 12,615.63, 18,923.45 and 3,381.87 is: 5,072.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,615.63 : 18,923.45 = 3,381.87 : x
  2. Step 2: Convert to fraction form
    12,615.63/18,923.45 = 3,381.87/x
  3. Step 3: Cross multiply
    12,615.63x = 18,923.45 × 3,381.87
  4. Step 4: Simplify right side
    12,615.63x = 63,996,630.94
  5. Step 5: Solve for x
    x = 63,996,630.94/12,615.63
  6. Step 6: Final answer
    x = 5,072.81

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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.