Home / 38,942.40-58,415.68-12,645.22

Finding the Fourth Proportional to 38,942.40, 58,415.68 and 12,645.22

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Solution

The fourth proportional to 38,942.40, 58,415.68 and 12,645.22 is: 18,968.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,942.40 : 58,415.68 = 12,645.22 : x
  2. Step 2: Convert to fraction form
    38,942.40/58,415.68 = 12,645.22/x
  3. Step 3: Cross multiply
    38,942.40x = 58,415.68 × 12,645.22
  4. Step 4: Simplify right side
    38,942.40x = 738,679,125.05
  5. Step 5: Solve for x
    x = 738,679,125.05/38,942.40
  6. Step 6: Final answer
    x = 18,968.51

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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.