Home / 13,193.72-18,207.78-7,225.42

Finding the Fourth Proportional to 13,193.72, 18,207.78 and 7,225.42

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Solution

The fourth proportional to 13,193.72, 18,207.78 and 7,225.42 is: 9,971.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,193.72 : 18,207.78 = 7,225.42 : x
  2. Step 2: Convert to fraction form
    13,193.72/18,207.78 = 7,225.42/x
  3. Step 3: Cross multiply
    13,193.72x = 18,207.78 × 7,225.42
  4. Step 4: Simplify right side
    13,193.72x = 131,558,857.77
  5. Step 5: Solve for x
    x = 131,558,857.77/13,193.72
  6. Step 6: Final answer
    x = 9,971.32

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Double scale
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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.