Home / 40,942.02-61,391.16-12,856.89

Finding the Fourth Proportional to 40,942.02, 61,391.16 and 12,856.89

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Solution

The fourth proportional to 40,942.02, 61,391.16 and 12,856.89 is: 19,278.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,942.02 : 61,391.16 = 12,856.89 : x
  2. Step 2: Convert to fraction form
    40,942.02/61,391.16 = 12,856.89/x
  3. Step 3: Cross multiply
    40,942.02x = 61,391.16 × 12,856.89
  4. Step 4: Simplify right side
    40,942.02x = 789,299,391.09
  5. Step 5: Solve for x
    x = 789,299,391.09/40,942.02
  6. Step 6: Final answer
    x = 19,278.47

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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.