Home / 39,129.74-53,998.65-21,224.36

Finding the Fourth Proportional to 39,129.74, 53,998.65 and 21,224.36

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Solution

The fourth proportional to 39,129.74, 53,998.65 and 21,224.36 is: 29,289.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,129.74 : 53,998.65 = 21,224.36 : x
  2. Step 2: Convert to fraction form
    39,129.74/53,998.65 = 21,224.36/x
  3. Step 3: Cross multiply
    39,129.74x = 53,998.65 × 21,224.36
  4. Step 4: Simplify right side
    39,129.74x = 1,146,086,517.12
  5. Step 5: Solve for x
    x = 1,146,086,517.12/39,129.74
  6. Step 6: Final answer
    x = 29,289.40

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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.