Home / 10,239.72-15,346.80-4,389.54

Finding the Fourth Proportional to 10,239.72, 15,346.80 and 4,389.54

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Solution

The fourth proportional to 10,239.72, 15,346.80 and 4,389.54 is: 6,578.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,239.72 : 15,346.80 = 4,389.54 : x
  2. Step 2: Convert to fraction form
    10,239.72/15,346.80 = 4,389.54/x
  3. Step 3: Cross multiply
    10,239.72x = 15,346.80 × 4,389.54
  4. Step 4: Simplify right side
    10,239.72x = 67,365,392.47
  5. Step 5: Solve for x
    x = 67,365,392.47/10,239.72
  6. Step 6: Final answer
    x = 6,578.83

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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.