Home / 20,190.12-30,290.04-8,506.68

Finding the Fourth Proportional to 20,190.12, 30,290.04 and 8,506.68

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Solution

The fourth proportional to 20,190.12, 30,290.04 and 8,506.68 is: 12,762.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.12 : 30,290.04 = 8,506.68 : x
  2. Step 2: Convert to fraction form
    20,190.12/30,290.04 = 8,506.68/x
  3. Step 3: Cross multiply
    20,190.12x = 30,290.04 × 8,506.68
  4. Step 4: Simplify right side
    20,190.12x = 257,667,677.47
  5. Step 5: Solve for x
    x = 257,667,677.47/20,190.12
  6. Step 6: Final answer
    x = 12,762.07

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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.