Home / 21,785.20-30,063.76-12,353.92

Finding the Fourth Proportional to 21,785.20, 30,063.76 and 12,353.92

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Solution

The fourth proportional to 21,785.20, 30,063.76 and 12,353.92 is: 17,048.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,785.20 : 30,063.76 = 12,353.92 : x
  2. Step 2: Convert to fraction form
    21,785.20/30,063.76 = 12,353.92/x
  3. Step 3: Cross multiply
    21,785.20x = 30,063.76 × 12,353.92
  4. Step 4: Simplify right side
    21,785.20x = 371,405,285.94
  5. Step 5: Solve for x
    x = 371,405,285.94/21,785.20
  6. Step 6: Final answer
    x = 17,048.51

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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.