Home / 39,729.56-54,827.75-21,825.72

Finding the Fourth Proportional to 39,729.56, 54,827.75 and 21,825.72

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Solution

The fourth proportional to 39,729.56, 54,827.75 and 21,825.72 is: 30,120.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,729.56 : 54,827.75 = 21,825.72 : x
  2. Step 2: Convert to fraction form
    39,729.56/54,827.75 = 21,825.72/x
  3. Step 3: Cross multiply
    39,729.56x = 54,827.75 × 21,825.72
  4. Step 4: Simplify right side
    39,729.56x = 1,196,655,174.29
  5. Step 5: Solve for x
    x = 1,196,655,174.29/39,729.56
  6. Step 6: Final answer
    x = 30,120.02

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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.