Home / 13,129.76-19,688.88-4,916

Finding the Fourth Proportional to 13,129.76, 19,688.88 and 4,916

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Solution

The fourth proportional to 13,129.76, 19,688.88 and 4,916 is: 7,371.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,129.76 : 19,688.88 = 4,916 : x
  2. Step 2: Convert to fraction form
    13,129.76/19,688.88 = 4,916/x
  3. Step 3: Cross multiply
    13,129.76x = 19,688.88 × 4,916
  4. Step 4: Simplify right side
    13,129.76x = 96,790,534.08
  5. Step 5: Solve for x
    x = 96,790,534.08/13,129.76
  6. Step 6: Final answer
    x = 7,371.84

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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.