Home / 30,784.68-46,182.78-12,318.12

Finding the Fourth Proportional to 30,784.68, 46,182.78 and 12,318.12

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Solution

The fourth proportional to 30,784.68, 46,182.78 and 12,318.12 is: 18,479.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,784.68 : 46,182.78 = 12,318.12 : x
  2. Step 2: Convert to fraction form
    30,784.68/46,182.78 = 12,318.12/x
  3. Step 3: Cross multiply
    30,784.68x = 46,182.78 × 12,318.12
  4. Step 4: Simplify right side
    30,784.68x = 568,885,025.97
  5. Step 5: Solve for x
    x = 568,885,025.97/30,784.68
  6. Step 6: Final answer
    x = 18,479.48

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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.