Home / 10,420.92-15,631.47-3,495.42

Finding the Fourth Proportional to 10,420.92, 15,631.47 and 3,495.42

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Solution

The fourth proportional to 10,420.92, 15,631.47 and 3,495.42 is: 5,243.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,420.92 : 15,631.47 = 3,495.42 : x
  2. Step 2: Convert to fraction form
    10,420.92/15,631.47 = 3,495.42/x
  3. Step 3: Cross multiply
    10,420.92x = 15,631.47 × 3,495.42
  4. Step 4: Simplify right side
    10,420.92x = 54,638,552.87
  5. Step 5: Solve for x
    x = 54,638,552.87/10,420.92
  6. Step 6: Final answer
    x = 5,243.16

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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.