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Finding the Fourth Proportional to 21,752.55, 32,609.99 and 12,969.01

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Solution

The fourth proportional to 21,752.55, 32,609.99 and 12,969.01 is: 19,442.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,752.55 : 32,609.99 = 12,969.01 : x
  2. Step 2: Convert to fraction form
    21,752.55/32,609.99 = 12,969.01/x
  3. Step 3: Cross multiply
    21,752.55x = 32,609.99 × 12,969.01
  4. Step 4: Simplify right side
    21,752.55x = 422,919,359.59
  5. Step 5: Solve for x
    x = 422,919,359.59/21,752.55
  6. Step 6: Final answer
    x = 19,442.29

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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.