Home / 10,911.92-15,050.40-6,929.60

Finding the Fourth Proportional to 10,911.92, 15,050.40 and 6,929.60

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Solution

The fourth proportional to 10,911.92, 15,050.40 and 6,929.60 is: 9,557.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,911.92 : 15,050.40 = 6,929.60 : x
  2. Step 2: Convert to fraction form
    10,911.92/15,050.40 = 6,929.60/x
  3. Step 3: Cross multiply
    10,911.92x = 15,050.40 × 6,929.60
  4. Step 4: Simplify right side
    10,911.92x = 104,293,251.84
  5. Step 5: Solve for x
    x = 104,293,251.84/10,911.92
  6. Step 6: Final answer
    x = 9,557.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.