Home / 38,139.92-52,633.09-21,144.12

Finding the Fourth Proportional to 38,139.92, 52,633.09 and 21,144.12

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Solution

The fourth proportional to 38,139.92, 52,633.09 and 21,144.12 is: 29,178.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,139.92 : 52,633.09 = 21,144.12 : x
  2. Step 2: Convert to fraction form
    38,139.92/52,633.09 = 21,144.12/x
  3. Step 3: Cross multiply
    38,139.92x = 52,633.09 × 21,144.12
  4. Step 4: Simplify right side
    38,139.92x = 1,112,880,370.93
  5. Step 5: Solve for x
    x = 1,112,880,370.93/38,139.92
  6. Step 6: Final answer
    x = 29,178.89

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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.