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Finding the Fourth Proportional to 8,463.52, 12,667.68 and 7,655.20

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Solution

The fourth proportional to 8,463.52, 12,667.68 and 7,655.20 is: 11,457.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,463.52 : 12,667.68 = 7,655.20 : x
  2. Step 2: Convert to fraction form
    8,463.52/12,667.68 = 7,655.20/x
  3. Step 3: Cross multiply
    8,463.52x = 12,667.68 × 7,655.20
  4. Step 4: Simplify right side
    8,463.52x = 96,973,623.94
  5. Step 5: Solve for x
    x = 96,973,623.94/8,463.52
  6. Step 6: Final answer
    x = 11,457.84

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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.