Home / 20,412.49-30,604.81-10,392.61

Finding the Fourth Proportional to 20,412.49, 30,604.81 and 10,392.61

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Solution

The fourth proportional to 20,412.49, 30,604.81 and 10,392.61 is: 15,581.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412.49 : 30,604.81 = 10,392.61 : x
  2. Step 2: Convert to fraction form
    20,412.49/30,604.81 = 10,392.61/x
  3. Step 3: Cross multiply
    20,412.49x = 30,604.81 × 10,392.61
  4. Step 4: Simplify right side
    20,412.49x = 318,063,854.45
  5. Step 5: Solve for x
    x = 318,063,854.45/20,412.49
  6. Step 6: Final answer
    x = 15,581.83

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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.