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Finding the Fourth Proportional to 18,814, 25,964.22 and 10,430.50

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Solution

The fourth proportional to 18,814, 25,964.22 and 10,430.50 is: 14,394.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,814 : 25,964.22 = 10,430.50 : x
  2. Step 2: Convert to fraction form
    18,814/25,964.22 = 10,430.50/x
  3. Step 3: Cross multiply
    18,814x = 25,964.22 × 10,430.50
  4. Step 4: Simplify right side
    18,814x = 270,819,796.71
  5. Step 5: Solve for x
    x = 270,819,796.71/18,814
  6. Step 6: Final answer
    x = 14,394.59

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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.