Home / 39,817.63-54,947.13-21,912.61

Finding the Fourth Proportional to 39,817.63, 54,947.13 and 21,912.61

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Solution

The fourth proportional to 39,817.63, 54,947.13 and 21,912.61 is: 30,238.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,817.63 : 54,947.13 = 21,912.61 : x
  2. Step 2: Convert to fraction form
    39,817.63/54,947.13 = 21,912.61/x
  3. Step 3: Cross multiply
    39,817.63x = 54,947.13 × 21,912.61
  4. Step 4: Simplify right side
    39,817.63x = 1,204,035,030.31
  5. Step 5: Solve for x
    x = 1,204,035,030.31/39,817.63
  6. Step 6: Final answer
    x = 30,238.74

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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.