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Finding the Fourth Proportional to 10,918.29, 15,068.94 and 6,671.87

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Solution

The fourth proportional to 10,918.29, 15,068.94 and 6,671.87 is: 9,208.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,918.29 : 15,068.94 = 6,671.87 : x
  2. Step 2: Convert to fraction form
    10,918.29/15,068.94 = 6,671.87/x
  3. Step 3: Cross multiply
    10,918.29x = 15,068.94 × 6,671.87
  4. Step 4: Simplify right side
    10,918.29x = 100,537,964.86
  5. Step 5: Solve for x
    x = 100,537,964.86/10,918.29
  6. Step 6: Final answer
    x = 9,208.21

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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.