Home / 31,412.72-43,351.60-19,483.99

Finding the Fourth Proportional to 31,412.72, 43,351.60 and 19,483.99

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Solution

The fourth proportional to 31,412.72, 43,351.60 and 19,483.99 is: 26,889.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,412.72 : 43,351.60 = 19,483.99 : x
  2. Step 2: Convert to fraction form
    31,412.72/43,351.60 = 19,483.99/x
  3. Step 3: Cross multiply
    31,412.72x = 43,351.60 × 19,483.99
  4. Step 4: Simplify right side
    31,412.72x = 844,662,140.88
  5. Step 5: Solve for x
    x = 844,662,140.88/31,412.72
  6. Step 6: Final answer
    x = 26,889.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.