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Finding the Fourth Proportional to 14,268.84, 19,689.48 and 7,894.41

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Solution

The fourth proportional to 14,268.84, 19,689.48 and 7,894.41 is: 10,893.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,268.84 : 19,689.48 = 7,894.41 : x
  2. Step 2: Convert to fraction form
    14,268.84/19,689.48 = 7,894.41/x
  3. Step 3: Cross multiply
    14,268.84x = 19,689.48 × 7,894.41
  4. Step 4: Simplify right side
    14,268.84x = 155,436,827.81
  5. Step 5: Solve for x
    x = 155,436,827.81/14,268.84
  6. Step 6: Final answer
    x = 10,893.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.