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Finding the Fourth Proportional to 13,290.68, 19,936.04 and 9,118.03

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Solution

The fourth proportional to 13,290.68, 19,936.04 and 9,118.03 is: 13,677.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.68 : 19,936.04 = 9,118.03 : x
  2. Step 2: Convert to fraction form
    13,290.68/19,936.04 = 9,118.03/x
  3. Step 3: Cross multiply
    13,290.68x = 19,936.04 × 9,118.03
  4. Step 4: Simplify right side
    13,290.68x = 181,777,460.64
  5. Step 5: Solve for x
    x = 181,777,460.64/13,290.68
  6. Step 6: Final answer
    x = 13,677.07

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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.