Home / 38,676.94-53,377.43-21,680.91

Finding the Fourth Proportional to 38,676.94, 53,377.43 and 21,680.91

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Solution

The fourth proportional to 38,676.94, 53,377.43 and 21,680.91 is: 29,921.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,676.94 : 53,377.43 = 21,680.91 : x
  2. Step 2: Convert to fraction form
    38,676.94/53,377.43 = 21,680.91/x
  3. Step 3: Cross multiply
    38,676.94x = 53,377.43 × 21,680.91
  4. Step 4: Simplify right side
    38,676.94x = 1,157,271,147.46
  5. Step 5: Solve for x
    x = 1,157,271,147.46/38,676.94
  6. Step 6: Final answer
    x = 29,921.48

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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.