Home / 34,638.84-47,800.80-20,491.92

Finding the Fourth Proportional to 34,638.84, 47,800.80 and 20,491.92

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Solution

The fourth proportional to 34,638.84, 47,800.80 and 20,491.92 is: 28,278.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,638.84 : 47,800.80 = 20,491.92 : x
  2. Step 2: Convert to fraction form
    34,638.84/47,800.80 = 20,491.92/x
  3. Step 3: Cross multiply
    34,638.84x = 47,800.80 × 20,491.92
  4. Step 4: Simplify right side
    34,638.84x = 979,530,169.54
  5. Step 5: Solve for x
    x = 979,530,169.54/34,638.84
  6. Step 6: Final answer
    x = 28,278.38

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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.