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Finding the Fourth Proportional to 19,265.92, 28,904.71 and 13,654.45

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Solution

The fourth proportional to 19,265.92, 28,904.71 and 13,654.45 is: 20,485.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,265.92 : 28,904.71 = 13,654.45 : x
  2. Step 2: Convert to fraction form
    19,265.92/28,904.71 = 13,654.45/x
  3. Step 3: Cross multiply
    19,265.92x = 28,904.71 × 13,654.45
  4. Step 4: Simplify right side
    19,265.92x = 394,677,772.94
  5. Step 5: Solve for x
    x = 394,677,772.94/19,265.92
  6. Step 6: Final answer
    x = 20,485.80

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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.