Home / 39,033.90-53,866.92-21,128.88

Finding the Fourth Proportional to 39,033.90, 53,866.92 and 21,128.88

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Solution

The fourth proportional to 39,033.90, 53,866.92 and 21,128.88 is: 29,157.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,033.90 : 53,866.92 = 21,128.88 : x
  2. Step 2: Convert to fraction form
    39,033.90/53,866.92 = 21,128.88/x
  3. Step 3: Cross multiply
    39,033.90x = 53,866.92 × 21,128.88
  4. Step 4: Simplify right side
    39,033.90x = 1,138,147,688.65
  5. Step 5: Solve for x
    x = 1,138,147,688.65/39,033.90
  6. Step 6: Final answer
    x = 29,157.93

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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.