Home / 20,326.69-30,489.12-8,475.58

Finding the Fourth Proportional to 20,326.69, 30,489.12 and 8,475.58

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Solution

The fourth proportional to 20,326.69, 30,489.12 and 8,475.58 is: 12,712.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,326.69 : 30,489.12 = 8,475.58 : x
  2. Step 2: Convert to fraction form
    20,326.69/30,489.12 = 8,475.58/x
  3. Step 3: Cross multiply
    20,326.69x = 30,489.12 × 8,475.58
  4. Step 4: Simplify right side
    20,326.69x = 258,412,975.69
  5. Step 5: Solve for x
    x = 258,412,975.69/20,326.69
  6. Step 6: Final answer
    x = 12,712.99

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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.