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Finding the Fourth Proportional to 19,265.96, 28,893.90 and 5,411.72

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Solution

The fourth proportional to 19,265.96, 28,893.90 and 5,411.72 is: 8,116.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,265.96 : 28,893.90 = 5,411.72 : x
  2. Step 2: Convert to fraction form
    19,265.96/28,893.90 = 5,411.72/x
  3. Step 3: Cross multiply
    19,265.96x = 28,893.90 × 5,411.72
  4. Step 4: Simplify right side
    19,265.96x = 156,365,696.51
  5. Step 5: Solve for x
    x = 156,365,696.51/19,265.96
  6. Step 6: Final answer
    x = 8,116.16

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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.