Home / 12,195.20-16,829.60-7,477.76

Finding the Fourth Proportional to 12,195.20, 16,829.60 and 7,477.76

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Solution

The fourth proportional to 12,195.20, 16,829.60 and 7,477.76 is: 10,319.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,195.20 : 16,829.60 = 7,477.76 : x
  2. Step 2: Convert to fraction form
    12,195.20/16,829.60 = 7,477.76/x
  3. Step 3: Cross multiply
    12,195.20x = 16,829.60 × 7,477.76
  4. Step 4: Simplify right side
    12,195.20x = 125,847,709.70
  5. Step 5: Solve for x
    x = 125,847,709.70/12,195.20
  6. Step 6: Final answer
    x = 10,319.45

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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.