Home / 39,445.72-54,435.54-21,540.94

Finding the Fourth Proportional to 39,445.72, 54,435.54 and 21,540.94

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Solution

The fourth proportional to 39,445.72, 54,435.54 and 21,540.94 is: 29,726.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,445.72 : 54,435.54 = 21,540.94 : x
  2. Step 2: Convert to fraction form
    39,445.72/54,435.54 = 21,540.94/x
  3. Step 3: Cross multiply
    39,445.72x = 54,435.54 × 21,540.94
  4. Step 4: Simplify right side
    39,445.72x = 1,172,592,701.01
  5. Step 5: Solve for x
    x = 1,172,592,701.01/39,445.72
  6. Step 6: Final answer
    x = 29,726.74

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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.