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Finding the Fourth Proportional to 10,129.16, 15,201.84 and 4,289.84

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Solution

The fourth proportional to 10,129.16, 15,201.84 and 4,289.84 is: 6,438.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.16 : 15,201.84 = 4,289.84 : x
  2. Step 2: Convert to fraction form
    10,129.16/15,201.84 = 4,289.84/x
  3. Step 3: Cross multiply
    10,129.16x = 15,201.84 × 4,289.84
  4. Step 4: Simplify right side
    10,129.16x = 65,213,461.31
  5. Step 5: Solve for x
    x = 65,213,461.31/10,129.16
  6. Step 6: Final answer
    x = 6,438.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.