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Finding the Fourth Proportional to 10,438.56, 14,409.72 and 6,246

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Solution

The fourth proportional to 10,438.56, 14,409.72 and 6,246 is: 8,622.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,438.56 : 14,409.72 = 6,246 : x
  2. Step 2: Convert to fraction form
    10,438.56/14,409.72 = 6,246/x
  3. Step 3: Cross multiply
    10,438.56x = 14,409.72 × 6,246
  4. Step 4: Simplify right side
    10,438.56x = 90,003,111.12
  5. Step 5: Solve for x
    x = 90,003,111.12/10,438.56
  6. Step 6: Final answer
    x = 8,622.18

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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.