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Finding the Fourth Proportional to 18,953.28, 28,433.52 and 8,565

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Solution

The fourth proportional to 18,953.28, 28,433.52 and 8,565 is: 12,849.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,953.28 : 28,433.52 = 8,565 : x
  2. Step 2: Convert to fraction form
    18,953.28/28,433.52 = 8,565/x
  3. Step 3: Cross multiply
    18,953.28x = 28,433.52 × 8,565
  4. Step 4: Simplify right side
    18,953.28x = 243,533,098.80
  5. Step 5: Solve for x
    x = 243,533,098.80/18,953.28
  6. Step 6: Final answer
    x = 12,849.13

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.