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Finding the Fourth Proportional to 12,343.87, 18,504.87 and 9,435.16

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Solution

The fourth proportional to 12,343.87, 18,504.87 and 9,435.16 is: 14,144.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,343.87 : 18,504.87 = 9,435.16 : x
  2. Step 2: Convert to fraction form
    12,343.87/18,504.87 = 9,435.16/x
  3. Step 3: Cross multiply
    12,343.87x = 18,504.87 × 9,435.16
  4. Step 4: Simplify right side
    12,343.87x = 174,596,409.23
  5. Step 5: Solve for x
    x = 174,596,409.23/12,343.87
  6. Step 6: Final answer
    x = 14,144.38

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1.5x scale

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.