Home / 10,809.76-16,168.56-6,639.52

Finding the Fourth Proportional to 10,809.76, 16,168.56 and 6,639.52

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Solution

The fourth proportional to 10,809.76, 16,168.56 and 6,639.52 is: 9,930.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,809.76 : 16,168.56 = 6,639.52 : x
  2. Step 2: Convert to fraction form
    10,809.76/16,168.56 = 6,639.52/x
  3. Step 3: Cross multiply
    10,809.76x = 16,168.56 × 6,639.52
  4. Step 4: Simplify right side
    10,809.76x = 107,351,477.49
  5. Step 5: Solve for x
    x = 107,351,477.49/10,809.76
  6. Step 6: Final answer
    x = 9,930.98

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1.5x scale

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.