Home / 39,085.09-53,937.19-21,180.09

Finding the Fourth Proportional to 39,085.09, 53,937.19 and 21,180.09

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Solution

The fourth proportional to 39,085.09, 53,937.19 and 21,180.09 is: 29,228.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,085.09 : 53,937.19 = 21,180.09 : x
  2. Step 2: Convert to fraction form
    39,085.09/53,937.19 = 21,180.09/x
  3. Step 3: Cross multiply
    39,085.09x = 53,937.19 × 21,180.09
  4. Step 4: Simplify right side
    39,085.09x = 1,142,394,485.60
  5. Step 5: Solve for x
    x = 1,142,394,485.60/39,085.09
  6. Step 6: Final answer
    x = 29,228.40

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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.