Home / 31,858.89-47,794.08-13,128.48

Finding the Fourth Proportional to 31,858.89, 47,794.08 and 13,128.48

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Solution

The fourth proportional to 31,858.89, 47,794.08 and 13,128.48 is: 19,695.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,858.89 : 47,794.08 = 13,128.48 : x
  2. Step 2: Convert to fraction form
    31,858.89/47,794.08 = 13,128.48/x
  3. Step 3: Cross multiply
    31,858.89x = 47,794.08 × 13,128.48
  4. Step 4: Simplify right side
    31,858.89x = 627,463,623.40
  5. Step 5: Solve for x
    x = 627,463,623.40/31,858.89
  6. Step 6: Final answer
    x = 19,695.09

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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.