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Finding the Fourth Proportional to 13,047.68, 18,041.23 and 12,836.68

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Solution

The fourth proportional to 13,047.68, 18,041.23 and 12,836.68 is: 17,749.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,047.68 : 18,041.23 = 12,836.68 : x
  2. Step 2: Convert to fraction form
    13,047.68/18,041.23 = 12,836.68/x
  3. Step 3: Cross multiply
    13,047.68x = 18,041.23 × 12,836.68
  4. Step 4: Simplify right side
    13,047.68x = 231,589,467.26
  5. Step 5: Solve for x
    x = 231,589,467.26/13,047.68
  6. Step 6: Final answer
    x = 17,749.47

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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.