Home / 30,401.12-45,532.43-20,998.39

Finding the Fourth Proportional to 30,401.12, 45,532.43 and 20,998.39

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Solution

The fourth proportional to 30,401.12, 45,532.43 and 20,998.39 is: 31,449.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,401.12 : 45,532.43 = 20,998.39 : x
  2. Step 2: Convert to fraction form
    30,401.12/45,532.43 = 20,998.39/x
  3. Step 3: Cross multiply
    30,401.12x = 45,532.43 × 20,998.39
  4. Step 4: Simplify right side
    30,401.12x = 956,107,668.08
  5. Step 5: Solve for x
    x = 956,107,668.08/30,401.12
  6. Step 6: Final answer
    x = 31,449.75

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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.