Home / 38,945.20-53,744.27-21,040.15

Finding the Fourth Proportional to 38,945.20, 53,744.27 and 21,040.15

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Solution

The fourth proportional to 38,945.20, 53,744.27 and 21,040.15 is: 29,035.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,945.20 : 53,744.27 = 21,040.15 : x
  2. Step 2: Convert to fraction form
    38,945.20/53,744.27 = 21,040.15/x
  3. Step 3: Cross multiply
    38,945.20x = 53,744.27 × 21,040.15
  4. Step 4: Simplify right side
    38,945.20x = 1,130,787,233.72
  5. Step 5: Solve for x
    x = 1,130,787,233.72/38,945.20
  6. Step 6: Final answer
    x = 29,035.35

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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.