Home / 12,430.96-18,644.84-3,666.80

Finding the Fourth Proportional to 12,430.96, 18,644.84 and 3,666.80

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Solution

The fourth proportional to 12,430.96, 18,644.84 and 3,666.80 is: 5,499.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,430.96 : 18,644.84 = 3,666.80 : x
  2. Step 2: Convert to fraction form
    12,430.96/18,644.84 = 3,666.80/x
  3. Step 3: Cross multiply
    12,430.96x = 18,644.84 × 3,666.80
  4. Step 4: Simplify right side
    12,430.96x = 68,366,899.31
  5. Step 5: Solve for x
    x = 68,366,899.31/12,430.96
  6. Step 6: Final answer
    x = 5,499.73

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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.