Home / 39,817.40-54,948.30-21,911.96

Finding the Fourth Proportional to 39,817.40, 54,948.30 and 21,911.96

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Solution

The fourth proportional to 39,817.40, 54,948.30 and 21,911.96 is: 30,238.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,817.40 : 54,948.30 = 21,911.96 : x
  2. Step 2: Convert to fraction form
    39,817.40/54,948.30 = 21,911.96/x
  3. Step 3: Cross multiply
    39,817.40x = 54,948.30 × 21,911.96
  4. Step 4: Simplify right side
    39,817.40x = 1,204,024,951.67
  5. Step 5: Solve for x
    x = 1,204,024,951.67/39,817.40
  6. Step 6: Final answer
    x = 30,238.66

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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.