Home / 39,129.37-53,998.12-21,223.99

Finding the Fourth Proportional to 39,129.37, 53,998.12 and 21,223.99

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Solution

The fourth proportional to 39,129.37, 53,998.12 and 21,223.99 is: 29,288.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,129.37 : 53,998.12 = 21,223.99 : x
  2. Step 2: Convert to fraction form
    39,129.37/53,998.12 = 21,223.99/x
  3. Step 3: Cross multiply
    39,129.37x = 53,998.12 × 21,223.99
  4. Step 4: Simplify right side
    39,129.37x = 1,146,055,652.93
  5. Step 5: Solve for x
    x = 1,146,055,652.93/39,129.37
  6. Step 6: Final answer
    x = 29,288.89

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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.