Home / 31,940.10-47,919.40-13,216.68

Finding the Fourth Proportional to 31,940.10, 47,919.40 and 13,216.68

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Solution

The fourth proportional to 31,940.10, 47,919.40 and 13,216.68 is: 19,828.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,940.10 : 47,919.40 = 13,216.68 : x
  2. Step 2: Convert to fraction form
    31,940.10/47,919.40 = 13,216.68/x
  3. Step 3: Cross multiply
    31,940.10x = 47,919.40 × 13,216.68
  4. Step 4: Simplify right side
    31,940.10x = 633,335,342.55
  5. Step 5: Solve for x
    x = 633,335,342.55/31,940.10
  6. Step 6: Final answer
    x = 19,828.85

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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.