Home / 39,087.12-53,940.02-21,181.66

Finding the Fourth Proportional to 39,087.12, 53,940.02 and 21,181.66

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Solution

The fourth proportional to 39,087.12, 53,940.02 and 21,181.66 is: 29,230.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,087.12 : 53,940.02 = 21,181.66 : x
  2. Step 2: Convert to fraction form
    39,087.12/53,940.02 = 21,181.66/x
  3. Step 3: Cross multiply
    39,087.12x = 53,940.02 × 21,181.66
  4. Step 4: Simplify right side
    39,087.12x = 1,142,539,164.03
  5. Step 5: Solve for x
    x = 1,142,539,164.03/39,087.12
  6. Step 6: Final answer
    x = 29,230.58

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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.