Home / 13,290.89-19,936.34-9,118.25

Finding the Fourth Proportional to 13,290.89, 19,936.34 and 9,118.25

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Solution

The fourth proportional to 13,290.89, 19,936.34 and 9,118.25 is: 13,677.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.89 : 19,936.34 = 9,118.25 : x
  2. Step 2: Convert to fraction form
    13,290.89/19,936.34 = 9,118.25/x
  3. Step 3: Cross multiply
    13,290.89x = 19,936.34 × 9,118.25
  4. Step 4: Simplify right side
    13,290.89x = 181,784,593.22
  5. Step 5: Solve for x
    x = 181,784,593.22/13,290.89
  6. Step 6: Final answer
    x = 13,677.38

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Double scale
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Similar ratio
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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.