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Finding the Fourth Proportional to 21,762.25, 30,033.12 and 12,333.85

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Solution

The fourth proportional to 21,762.25, 30,033.12 and 12,333.85 is: 17,021.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,762.25 : 30,033.12 = 12,333.85 : x
  2. Step 2: Convert to fraction form
    21,762.25/30,033.12 = 12,333.85/x
  3. Step 3: Cross multiply
    21,762.25x = 30,033.12 × 12,333.85
  4. Step 4: Simplify right side
    21,762.25x = 370,423,997.11
  5. Step 5: Solve for x
    x = 370,423,997.11/21,762.25
  6. Step 6: Final answer
    x = 17,021.40

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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.