Home / 31,939.51-47,915.03-13,209.37

Finding the Fourth Proportional to 31,939.51, 47,915.03 and 13,209.37

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Solution

The fourth proportional to 31,939.51, 47,915.03 and 13,209.37 is: 19,816.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,939.51 : 47,915.03 = 13,209.37 : x
  2. Step 2: Convert to fraction form
    31,939.51/47,915.03 = 13,209.37/x
  3. Step 3: Cross multiply
    31,939.51x = 47,915.03 × 13,209.37
  4. Step 4: Simplify right side
    31,939.51x = 632,927,359.83
  5. Step 5: Solve for x
    x = 632,927,359.83/31,939.51
  6. Step 6: Final answer
    x = 19,816.44

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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.