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Finding the Fourth Proportional to 21,363.35, 29,480.90 and 11,804.00

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Solution

The fourth proportional to 21,363.35, 29,480.90 and 11,804.00 is: 16,289.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,363.35 : 29,480.90 = 11,804.00 : x
  2. Step 2: Convert to fraction form
    21,363.35/29,480.90 = 11,804.00/x
  3. Step 3: Cross multiply
    21,363.35x = 29,480.90 × 11,804.00
  4. Step 4: Simplify right side
    21,363.35x = 347,992,337.18
  5. Step 5: Solve for x
    x = 347,992,337.18/21,363.35
  6. Step 6: Final answer
    x = 16,289.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.