Home / 21,861.90-32,622.35-19,505.71

Finding the Fourth Proportional to 21,861.90, 32,622.35 and 19,505.71

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Solution

The fourth proportional to 21,861.90, 32,622.35 and 19,505.71 is: 29,106.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,861.90 : 32,622.35 = 19,505.71 : x
  2. Step 2: Convert to fraction form
    21,861.90/32,622.35 = 19,505.71/x
  3. Step 3: Cross multiply
    21,861.90x = 32,622.35 × 19,505.71
  4. Step 4: Simplify right side
    21,861.90x = 636,322,066.25
  5. Step 5: Solve for x
    x = 636,322,066.25/21,861.90
  6. Step 6: Final answer
    x = 29,106.43

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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.