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Finding the Fourth Proportional to 13,703.69, 18,911.06 and 7,416.07

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Solution

The fourth proportional to 13,703.69, 18,911.06 and 7,416.07 is: 10,234.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,703.69 : 18,911.06 = 7,416.07 : x
  2. Step 2: Convert to fraction form
    13,703.69/18,911.06 = 7,416.07/x
  3. Step 3: Cross multiply
    13,703.69x = 18,911.06 × 7,416.07
  4. Step 4: Simplify right side
    13,703.69x = 140,245,744.73
  5. Step 5: Solve for x
    x = 140,245,744.73/13,703.69
  6. Step 6: Final answer
    x = 10,234.16

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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.