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Finding the Fourth Proportional to 21,834.70, 30,133.11 and 16,520.29

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Solution

The fourth proportional to 21,834.70, 30,133.11 and 16,520.29 is: 22,798.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,834.70 : 30,133.11 = 16,520.29 : x
  2. Step 2: Convert to fraction form
    21,834.70/30,133.11 = 16,520.29/x
  3. Step 3: Cross multiply
    21,834.70x = 30,133.11 × 16,520.29
  4. Step 4: Simplify right side
    21,834.70x = 497,807,702.42
  5. Step 5: Solve for x
    x = 497,807,702.42/21,834.70
  6. Step 6: Final answer
    x = 22,798.93

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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.