Home / 10,212.98-15,315.26-3,190.59

Finding the Fourth Proportional to 10,212.98, 15,315.26 and 3,190.59

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Solution

The fourth proportional to 10,212.98, 15,315.26 and 3,190.59 is: 4,784.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,212.98 : 15,315.26 = 3,190.59 : x
  2. Step 2: Convert to fraction form
    10,212.98/15,315.26 = 3,190.59/x
  3. Step 3: Cross multiply
    10,212.98x = 15,315.26 × 3,190.59
  4. Step 4: Simplify right side
    10,212.98x = 48,864,699.45
  5. Step 5: Solve for x
    x = 48,864,699.45/10,212.98
  6. Step 6: Final answer
    x = 4,784.57

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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.