Home / 45,289.38-67,912.22-18,987.06

Finding the Fourth Proportional to 45,289.38, 67,912.22 and 18,987.06

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Solution

The fourth proportional to 45,289.38, 67,912.22 and 18,987.06 is: 28,471.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,289.38 : 67,912.22 = 18,987.06 : x
  2. Step 2: Convert to fraction form
    45,289.38/67,912.22 = 18,987.06/x
  3. Step 3: Cross multiply
    45,289.38x = 67,912.22 × 18,987.06
  4. Step 4: Simplify right side
    45,289.38x = 1,289,453,395.87
  5. Step 5: Solve for x
    x = 1,289,453,395.87/45,289.38
  6. Step 6: Final answer
    x = 28,471.43

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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.