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Finding the Fourth Proportional to 13,243.98, 18,271.46 and 8,530.98

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Solution

The fourth proportional to 13,243.98, 18,271.46 and 8,530.98 is: 11,769.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,243.98 : 18,271.46 = 8,530.98 : x
  2. Step 2: Convert to fraction form
    13,243.98/18,271.46 = 8,530.98/x
  3. Step 3: Cross multiply
    13,243.98x = 18,271.46 × 8,530.98
  4. Step 4: Simplify right side
    13,243.98x = 155,873,459.83
  5. Step 5: Solve for x
    x = 155,873,459.83/13,243.98
  6. Step 6: Final answer
    x = 11,769.38

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1.5x scale

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.