Home / 13,905.26-19,173.89-8,861.50

Finding the Fourth Proportional to 13,905.26, 19,173.89 and 8,861.50

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Solution

The fourth proportional to 13,905.26, 19,173.89 and 8,861.50 is: 12,219.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.26 : 19,173.89 = 8,861.50 : x
  2. Step 2: Convert to fraction form
    13,905.26/19,173.89 = 8,861.50/x
  3. Step 3: Cross multiply
    13,905.26x = 19,173.89 × 8,861.50
  4. Step 4: Simplify right side
    13,905.26x = 169,909,286.06
  5. Step 5: Solve for x
    x = 169,909,286.06/13,905.26
  6. Step 6: Final answer
    x = 12,219.07

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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.