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Finding the Fourth Proportional to 21,661.38, 32,505.03 and 19,898.82

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Solution

The fourth proportional to 21,661.38, 32,505.03 and 19,898.82 is: 29,860.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,661.38 : 32,505.03 = 19,898.82 : x
  2. Step 2: Convert to fraction form
    21,661.38/32,505.03 = 19,898.82/x
  3. Step 3: Cross multiply
    21,661.38x = 32,505.03 × 19,898.82
  4. Step 4: Simplify right side
    21,661.38x = 646,811,741.06
  5. Step 5: Solve for x
    x = 646,811,741.06/21,661.38
  6. Step 6: Final answer
    x = 29,860.14

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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.