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Finding the Fourth Proportional to 13,610.02, 18,768 and 12,816.30

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Solution

The fourth proportional to 13,610.02, 18,768 and 12,816.30 is: 17,673.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,610.02 : 18,768 = 12,816.30 : x
  2. Step 2: Convert to fraction form
    13,610.02/18,768 = 12,816.30/x
  3. Step 3: Cross multiply
    13,610.02x = 18,768 × 12,816.30
  4. Step 4: Simplify right side
    13,610.02x = 240,536,318.40
  5. Step 5: Solve for x
    x = 240,536,318.40/13,610.02
  6. Step 6: Final answer
    x = 17,673.47

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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.