Home / 22,640.90-33,961.35-21,000.65

Finding the Fourth Proportional to 22,640.90, 33,961.35 and 21,000.65

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Solution

The fourth proportional to 22,640.90, 33,961.35 and 21,000.65 is: 31,500.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,640.90 : 33,961.35 = 21,000.65 : x
  2. Step 2: Convert to fraction form
    22,640.90/33,961.35 = 21,000.65/x
  3. Step 3: Cross multiply
    22,640.90x = 33,961.35 × 21,000.65
  4. Step 4: Simplify right side
    22,640.90x = 713,210,424.88
  5. Step 5: Solve for x
    x = 713,210,424.88/22,640.90
  6. Step 6: Final answer
    x = 31,500.98

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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.