Home / 39,033.04-53,865.56-21,128

Finding the Fourth Proportional to 39,033.04, 53,865.56 and 21,128

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Solution

The fourth proportional to 39,033.04, 53,865.56 and 21,128 is: 29,156.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,033.04 : 53,865.56 = 21,128 : x
  2. Step 2: Convert to fraction form
    39,033.04/53,865.56 = 21,128/x
  3. Step 3: Cross multiply
    39,033.04x = 53,865.56 × 21,128
  4. Step 4: Simplify right side
    39,033.04x = 1,138,071,551.68
  5. Step 5: Solve for x
    x = 1,138,071,551.68/39,033.04
  6. Step 6: Final answer
    x = 29,156.62

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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.