Home / 12,478.20-17,205.93-8,501.64

Finding the Fourth Proportional to 12,478.20, 17,205.93 and 8,501.64

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Solution

The fourth proportional to 12,478.20, 17,205.93 and 8,501.64 is: 11,722.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478.20 : 17,205.93 = 8,501.64 : x
  2. Step 2: Convert to fraction form
    12,478.20/17,205.93 = 8,501.64/x
  3. Step 3: Cross multiply
    12,478.20x = 17,205.93 × 8,501.64
  4. Step 4: Simplify right side
    12,478.20x = 146,278,622.73
  5. Step 5: Solve for x
    x = 146,278,622.73/12,478.20
  6. Step 6: Final answer
    x = 11,722.73

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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.