Home / 12,629.56-18,921.64-7,432.60

Finding the Fourth Proportional to 12,629.56, 18,921.64 and 7,432.60

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Solution

The fourth proportional to 12,629.56, 18,921.64 and 7,432.60 is: 11,135.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,629.56 : 18,921.64 = 7,432.60 : x
  2. Step 2: Convert to fraction form
    12,629.56/18,921.64 = 7,432.60/x
  3. Step 3: Cross multiply
    12,629.56x = 18,921.64 × 7,432.60
  4. Step 4: Simplify right side
    12,629.56x = 140,636,981.46
  5. Step 5: Solve for x
    x = 140,636,981.46/12,629.56
  6. Step 6: Final answer
    x = 11,135.54

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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.