Home / 39,021.52-53,849.70-21,116.53

Finding the Fourth Proportional to 39,021.52, 53,849.70 and 21,116.53

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Solution

The fourth proportional to 39,021.52, 53,849.70 and 21,116.53 is: 29,140.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,021.52 : 53,849.70 = 21,116.53 : x
  2. Step 2: Convert to fraction form
    39,021.52/53,849.70 = 21,116.53/x
  3. Step 3: Cross multiply
    39,021.52x = 53,849.70 × 21,116.53
  4. Step 4: Simplify right side
    39,021.52x = 1,137,118,791.02
  5. Step 5: Solve for x
    x = 1,137,118,791.02/39,021.52
  6. Step 6: Final answer
    x = 29,140.81

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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.