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Finding the Fourth Proportional to 10,318, 14,238.48 and 5,602.20

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Solution

The fourth proportional to 10,318, 14,238.48 and 5,602.20 is: 7,730.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,318 : 14,238.48 = 5,602.20 : x
  2. Step 2: Convert to fraction form
    10,318/14,238.48 = 5,602.20/x
  3. Step 3: Cross multiply
    10,318x = 14,238.48 × 5,602.20
  4. Step 4: Simplify right side
    10,318x = 79,766,812.66
  5. Step 5: Solve for x
    x = 79,766,812.66/10,318
  6. Step 6: Final answer
    x = 7,730.84

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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.