Home / 39,731.56-54,830.52-21,827.72

Finding the Fourth Proportional to 39,731.56, 54,830.52 and 21,827.72

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Solution

The fourth proportional to 39,731.56, 54,830.52 and 21,827.72 is: 30,122.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,731.56 : 54,830.52 = 21,827.72 : x
  2. Step 2: Convert to fraction form
    39,731.56/54,830.52 = 21,827.72/x
  3. Step 3: Cross multiply
    39,731.56x = 54,830.52 × 21,827.72
  4. Step 4: Simplify right side
    39,731.56x = 1,196,825,238.01
  5. Step 5: Solve for x
    x = 1,196,825,238.01/39,731.56
  6. Step 6: Final answer
    x = 30,122.78

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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.