Home / 39,044.26-53,881.11-21,139.28

Finding the Fourth Proportional to 39,044.26, 53,881.11 and 21,139.28

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Solution

The fourth proportional to 39,044.26, 53,881.11 and 21,139.28 is: 29,172.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,044.26 : 53,881.11 = 21,139.28 : x
  2. Step 2: Convert to fraction form
    39,044.26/53,881.11 = 21,139.28/x
  3. Step 3: Cross multiply
    39,044.26x = 53,881.11 × 21,139.28
  4. Step 4: Simplify right side
    39,044.26x = 1,139,007,601.60
  5. Step 5: Solve for x
    x = 1,139,007,601.60/39,044.26
  6. Step 6: Final answer
    x = 29,172.22

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1.5x scale

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.