Home / 20,411.75-30,619.56-7,932.74

Finding the Fourth Proportional to 20,411.75, 30,619.56 and 7,932.74

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Solution

The fourth proportional to 20,411.75, 30,619.56 and 7,932.74 is: 11,899.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,411.75 : 30,619.56 = 7,932.74 : x
  2. Step 2: Convert to fraction form
    20,411.75/30,619.56 = 7,932.74/x
  3. Step 3: Cross multiply
    20,411.75x = 30,619.56 × 7,932.74
  4. Step 4: Simplify right side
    20,411.75x = 242,896,835.46
  5. Step 5: Solve for x
    x = 242,896,835.46/20,411.75
  6. Step 6: Final answer
    x = 11,899.85

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1.5x scale

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.