Home / 39,905.52-55,069.32-22,000.56

Finding the Fourth Proportional to 39,905.52, 55,069.32 and 22,000.56

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Solution

The fourth proportional to 39,905.52, 55,069.32 and 22,000.56 is: 30,360.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,905.52 : 55,069.32 = 22,000.56 : x
  2. Step 2: Convert to fraction form
    39,905.52/55,069.32 = 22,000.56/x
  3. Step 3: Cross multiply
    39,905.52x = 55,069.32 × 22,000.56
  4. Step 4: Simplify right side
    39,905.52x = 1,211,555,878.82
  5. Step 5: Solve for x
    x = 1,211,555,878.82/39,905.52
  6. Step 6: Final answer
    x = 30,360.61

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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.