Home / 21,861.47-32,621.70-19,505.27

Finding the Fourth Proportional to 21,861.47, 32,621.70 and 19,505.27

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Solution

The fourth proportional to 21,861.47, 32,621.70 and 19,505.27 is: 29,105.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,861.47 : 32,621.70 = 19,505.27 : x
  2. Step 2: Convert to fraction form
    21,861.47/32,621.70 = 19,505.27/x
  3. Step 3: Cross multiply
    21,861.47x = 32,621.70 × 19,505.27
  4. Step 4: Simplify right side
    21,861.47x = 636,295,070.78
  5. Step 5: Solve for x
    x = 636,295,070.78/21,861.47
  6. Step 6: Final answer
    x = 29,105.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.