Home / 30,939.55-46,414.59-12,209.79

Finding the Fourth Proportional to 30,939.55, 46,414.59 and 12,209.79

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Solution

The fourth proportional to 30,939.55, 46,414.59 and 12,209.79 is: 18,316.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,939.55 : 46,414.59 = 12,209.79 : x
  2. Step 2: Convert to fraction form
    30,939.55/46,414.59 = 12,209.79/x
  3. Step 3: Cross multiply
    30,939.55x = 46,414.59 × 12,209.79
  4. Step 4: Simplify right side
    30,939.55x = 566,712,164.76
  5. Step 5: Solve for x
    x = 566,712,164.76/30,939.55
  6. Step 6: Final answer
    x = 18,316.76

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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.