Home / 31,977.41-47,970.48-10,911.78

Finding the Fourth Proportional to 31,977.41, 47,970.48 and 10,911.78

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Solution

The fourth proportional to 31,977.41, 47,970.48 and 10,911.78 is: 16,369.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,977.41 : 47,970.48 = 10,911.78 : x
  2. Step 2: Convert to fraction form
    31,977.41/47,970.48 = 10,911.78/x
  3. Step 3: Cross multiply
    31,977.41x = 47,970.48 × 10,911.78
  4. Step 4: Simplify right side
    31,977.41x = 523,443,324.25
  5. Step 5: Solve for x
    x = 523,443,324.25/31,977.41
  6. Step 6: Final answer
    x = 16,369.16

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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.