Home / 12,945.12-19,416.24-4,624.80

Finding the Fourth Proportional to 12,945.12, 19,416.24 and 4,624.80

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Solution

The fourth proportional to 12,945.12, 19,416.24 and 4,624.80 is: 6,936.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,945.12 : 19,416.24 = 4,624.80 : x
  2. Step 2: Convert to fraction form
    12,945.12/19,416.24 = 4,624.80/x
  3. Step 3: Cross multiply
    12,945.12x = 19,416.24 × 4,624.80
  4. Step 4: Simplify right side
    12,945.12x = 89,796,226.75
  5. Step 5: Solve for x
    x = 89,796,226.75/12,945.12
  6. Step 6: Final answer
    x = 6,936.69

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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.