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Finding the Fourth Proportional to 21,603.26, 32,404.89 and 6,813.32

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Solution

The fourth proportional to 21,603.26, 32,404.89 and 6,813.32 is: 10,219.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,603.26 : 32,404.89 = 6,813.32 : x
  2. Step 2: Convert to fraction form
    21,603.26/32,404.89 = 6,813.32/x
  3. Step 3: Cross multiply
    21,603.26x = 32,404.89 × 6,813.32
  4. Step 4: Simplify right side
    21,603.26x = 220,784,964.59
  5. Step 5: Solve for x
    x = 220,784,964.59/21,603.26
  6. Step 6: Final answer
    x = 10,219.99

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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.