Home / 57,912.03-86,868-20,451.74

Finding the Fourth Proportional to 57,912.03, 86,868 and 20,451.74

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Solution

The fourth proportional to 57,912.03, 86,868 and 20,451.74 is: 30,677.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,912.03 : 86,868 = 20,451.74 : x
  2. Step 2: Convert to fraction form
    57,912.03/86,868 = 20,451.74/x
  3. Step 3: Cross multiply
    57,912.03x = 86,868 × 20,451.74
  4. Step 4: Simplify right side
    57,912.03x = 1,776,601,315.98
  5. Step 5: Solve for x
    x = 1,776,601,315.98/57,912.03
  6. Step 6: Final answer
    x = 30,677.59

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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.