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Finding the Fourth Proportional to 19,310.20, 28,965.30 and 14,644.60

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Solution

The fourth proportional to 19,310.20, 28,965.30 and 14,644.60 is: 21,966.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,310.20 : 28,965.30 = 14,644.60 : x
  2. Step 2: Convert to fraction form
    19,310.20/28,965.30 = 14,644.60/x
  3. Step 3: Cross multiply
    19,310.20x = 28,965.30 × 14,644.60
  4. Step 4: Simplify right side
    19,310.20x = 424,185,232.38
  5. Step 5: Solve for x
    x = 424,185,232.38/19,310.20
  6. Step 6: Final answer
    x = 21,966.90

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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.