Home / 12,103.09-18,148.20-4,203.61

Finding the Fourth Proportional to 12,103.09, 18,148.20 and 4,203.61

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Solution

The fourth proportional to 12,103.09, 18,148.20 and 4,203.61 is: 6,303.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,103.09 : 18,148.20 = 4,203.61 : x
  2. Step 2: Convert to fraction form
    12,103.09/18,148.20 = 4,203.61/x
  3. Step 3: Cross multiply
    12,103.09x = 18,148.20 × 4,203.61
  4. Step 4: Simplify right side
    12,103.09x = 76,287,955.00
  5. Step 5: Solve for x
    x = 76,287,955.00/12,103.09
  6. Step 6: Final answer
    x = 6,303.18

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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.