Home / 38,884.20-53,661.21-21,889.07

Finding the Fourth Proportional to 38,884.20, 53,661.21 and 21,889.07

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Solution

The fourth proportional to 38,884.20, 53,661.21 and 21,889.07 is: 30,207.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,884.20 : 53,661.21 = 21,889.07 : x
  2. Step 2: Convert to fraction form
    38,884.20/53,661.21 = 21,889.07/x
  3. Step 3: Cross multiply
    38,884.20x = 53,661.21 × 21,889.07
  4. Step 4: Simplify right side
    38,884.20x = 1,174,593,713.67
  5. Step 5: Solve for x
    x = 1,174,593,713.67/38,884.20
  6. Step 6: Final answer
    x = 30,207.48

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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.