Home / 39,044.70-53,881.04-21,139.56

Finding the Fourth Proportional to 39,044.70, 53,881.04 and 21,139.56

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Solution

The fourth proportional to 39,044.70, 53,881.04 and 21,139.56 is: 29,172.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,044.70 : 53,881.04 = 21,139.56 : x
  2. Step 2: Convert to fraction form
    39,044.70/53,881.04 = 21,139.56/x
  3. Step 3: Cross multiply
    39,044.70x = 53,881.04 × 21,139.56
  4. Step 4: Simplify right side
    39,044.70x = 1,139,021,372.24
  5. Step 5: Solve for x
    x = 1,139,021,372.24/39,044.70
  6. Step 6: Final answer
    x = 29,172.24

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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.