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Finding the Fourth Proportional to 10,652.66, 15,978.42 and 4,078.34

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Solution

The fourth proportional to 10,652.66, 15,978.42 and 4,078.34 is: 6,117.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,652.66 : 15,978.42 = 4,078.34 : x
  2. Step 2: Convert to fraction form
    10,652.66/15,978.42 = 4,078.34/x
  3. Step 3: Cross multiply
    10,652.66x = 15,978.42 × 4,078.34
  4. Step 4: Simplify right side
    10,652.66x = 65,165,429.42
  5. Step 5: Solve for x
    x = 65,165,429.42/10,652.66
  6. Step 6: Final answer
    x = 6,117.29

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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.