Home / 12,190.12-18,281.39-4,397.92

Finding the Fourth Proportional to 12,190.12, 18,281.39 and 4,397.92

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Solution

The fourth proportional to 12,190.12, 18,281.39 and 4,397.92 is: 6,595.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.12 : 18,281.39 = 4,397.92 : x
  2. Step 2: Convert to fraction form
    12,190.12/18,281.39 = 4,397.92/x
  3. Step 3: Cross multiply
    12,190.12x = 18,281.39 × 4,397.92
  4. Step 4: Simplify right side
    12,190.12x = 80,400,090.71
  5. Step 5: Solve for x
    x = 80,400,090.71/12,190.12
  6. Step 6: Final answer
    x = 6,595.51

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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.