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Finding the Fourth Proportional to 19,364.40, 29,046.60 and 18,343.80

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Solution

The fourth proportional to 19,364.40, 29,046.60 and 18,343.80 is: 27,515.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,364.40 : 29,046.60 = 18,343.80 : x
  2. Step 2: Convert to fraction form
    19,364.40/29,046.60 = 18,343.80/x
  3. Step 3: Cross multiply
    19,364.40x = 29,046.60 × 18,343.80
  4. Step 4: Simplify right side
    19,364.40x = 532,825,021.08
  5. Step 5: Solve for x
    x = 532,825,021.08/19,364.40
  6. Step 6: Final answer
    x = 27,515.70

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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.