Home / 34,139.28-51,232.12-20,951.40

Finding the Fourth Proportional to 34,139.28, 51,232.12 and 20,951.40

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Solution

The fourth proportional to 34,139.28, 51,232.12 and 20,951.40 is: 31,441.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,139.28 : 51,232.12 = 20,951.40 : x
  2. Step 2: Convert to fraction form
    34,139.28/51,232.12 = 20,951.40/x
  3. Step 3: Cross multiply
    34,139.28x = 51,232.12 × 20,951.40
  4. Step 4: Simplify right side
    34,139.28x = 1,073,384,638.97
  5. Step 5: Solve for x
    x = 1,073,384,638.97/34,139.28
  6. Step 6: Final answer
    x = 31,441.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.