Home / 12,628.60-18,921.33-8,923.66

Finding the Fourth Proportional to 12,628.60, 18,921.33 and 8,923.66

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Solution

The fourth proportional to 12,628.60, 18,921.33 and 8,923.66 is: 13,370.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,628.60 : 18,921.33 = 8,923.66 : x
  2. Step 2: Convert to fraction form
    12,628.60/18,921.33 = 8,923.66/x
  3. Step 3: Cross multiply
    12,628.60x = 18,921.33 × 8,923.66
  4. Step 4: Simplify right side
    12,628.60x = 168,847,515.67
  5. Step 5: Solve for x
    x = 168,847,515.67/12,628.60
  6. Step 6: Final answer
    x = 13,370.25

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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.