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Finding the Fourth Proportional to 12,655.33, 18,980.46 and 4,334.65

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Solution

The fourth proportional to 12,655.33, 18,980.46 and 4,334.65 is: 6,501.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.33 : 18,980.46 = 4,334.65 : x
  2. Step 2: Convert to fraction form
    12,655.33/18,980.46 = 4,334.65/x
  3. Step 3: Cross multiply
    12,655.33x = 18,980.46 × 4,334.65
  4. Step 4: Simplify right side
    12,655.33x = 82,273,650.94
  5. Step 5: Solve for x
    x = 82,273,650.94/12,655.33
  6. Step 6: Final answer
    x = 6,501.11

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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.