Home / 39,033.65-53,866.45-21,128.60

Finding the Fourth Proportional to 39,033.65, 53,866.45 and 21,128.60

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Solution

The fourth proportional to 39,033.65, 53,866.45 and 21,128.60 is: 29,157.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,033.65 : 53,866.45 = 21,128.60 : x
  2. Step 2: Convert to fraction form
    39,033.65/53,866.45 = 21,128.60/x
  3. Step 3: Cross multiply
    39,033.65x = 53,866.45 × 21,128.60
  4. Step 4: Simplify right side
    39,033.65x = 1,138,122,836.55
  5. Step 5: Solve for x
    x = 1,138,122,836.55/39,033.65
  6. Step 6: Final answer
    x = 29,157.48

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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.