Home / 13,168.74-18,161.10-7,861.62

Finding the Fourth Proportional to 13,168.74, 18,161.10 and 7,861.62

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Solution

The fourth proportional to 13,168.74, 18,161.10 and 7,861.62 is: 10,842.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,168.74 : 18,161.10 = 7,861.62 : x
  2. Step 2: Convert to fraction form
    13,168.74/18,161.10 = 7,861.62/x
  3. Step 3: Cross multiply
    13,168.74x = 18,161.10 × 7,861.62
  4. Step 4: Simplify right side
    13,168.74x = 142,775,666.98
  5. Step 5: Solve for x
    x = 142,775,666.98/13,168.74
  6. Step 6: Final answer
    x = 10,842.01

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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.