Home / 39,620.91-54,676.40-21,471.27

Finding the Fourth Proportional to 39,620.91, 54,676.40 and 21,471.27

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Solution

The fourth proportional to 39,620.91, 54,676.40 and 21,471.27 is: 29,630.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,620.91 : 54,676.40 = 21,471.27 : x
  2. Step 2: Convert to fraction form
    39,620.91/54,676.40 = 21,471.27/x
  3. Step 3: Cross multiply
    39,620.91x = 54,676.40 × 21,471.27
  4. Step 4: Simplify right side
    39,620.91x = 1,173,971,639.67
  5. Step 5: Solve for x
    x = 1,173,971,639.67/39,620.91
  6. Step 6: Final answer
    x = 29,630.10

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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.