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Finding the Fourth Proportional to 11,256.50, 15,534.06 and 6,288.50

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Solution

The fourth proportional to 11,256.50, 15,534.06 and 6,288.50 is: 8,678.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,256.50 : 15,534.06 = 6,288.50 : x
  2. Step 2: Convert to fraction form
    11,256.50/15,534.06 = 6,288.50/x
  3. Step 3: Cross multiply
    11,256.50x = 15,534.06 × 6,288.50
  4. Step 4: Simplify right side
    11,256.50x = 97,685,936.31
  5. Step 5: Solve for x
    x = 97,685,936.31/11,256.50
  6. Step 6: Final answer
    x = 8,678.18

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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.