Home / 39,090.43-53,943.35-21,185.05

Finding the Fourth Proportional to 39,090.43, 53,943.35 and 21,185.05

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Solution

The fourth proportional to 39,090.43, 53,943.35 and 21,185.05 is: 29,234.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,090.43 : 53,943.35 = 21,185.05 : x
  2. Step 2: Convert to fraction form
    39,090.43/53,943.35 = 21,185.05/x
  3. Step 3: Cross multiply
    39,090.43x = 53,943.35 × 21,185.05
  4. Step 4: Simplify right side
    39,090.43x = 1,142,792,698.16
  5. Step 5: Solve for x
    x = 1,142,792,698.16/39,090.43
  6. Step 6: Final answer
    x = 29,234.59

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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.