Home / 10,929.62-15,078.56-6,730.58

Finding the Fourth Proportional to 10,929.62, 15,078.56 and 6,730.58

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Solution

The fourth proportional to 10,929.62, 15,078.56 and 6,730.58 is: 9,285.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,929.62 : 15,078.56 = 6,730.58 : x
  2. Step 2: Convert to fraction form
    10,929.62/15,078.56 = 6,730.58/x
  3. Step 3: Cross multiply
    10,929.62x = 15,078.56 × 6,730.58
  4. Step 4: Simplify right side
    10,929.62x = 101,487,454.36
  5. Step 5: Solve for x
    x = 101,487,454.36/10,929.62
  6. Step 6: Final answer
    x = 9,285.54

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1.5x scale

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.