Home / 10,431.45-15,647.38-3,411.52

Finding the Fourth Proportional to 10,431.45, 15,647.38 and 3,411.52

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Solution

The fourth proportional to 10,431.45, 15,647.38 and 3,411.52 is: 5,117.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,431.45 : 15,647.38 = 3,411.52 : x
  2. Step 2: Convert to fraction form
    10,431.45/15,647.38 = 3,411.52/x
  3. Step 3: Cross multiply
    10,431.45x = 15,647.38 × 3,411.52
  4. Step 4: Simplify right side
    10,431.45x = 53,381,302.17
  5. Step 5: Solve for x
    x = 53,381,302.17/10,431.45
  6. Step 6: Final answer
    x = 5,117.34

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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.