Home / 12,018.35-18,030.20-3,699.11

Finding the Fourth Proportional to 12,018.35, 18,030.20 and 3,699.11

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Solution

The fourth proportional to 12,018.35, 18,030.20 and 3,699.11 is: 5,549.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,018.35 : 18,030.20 = 3,699.11 : x
  2. Step 2: Convert to fraction form
    12,018.35/18,030.20 = 3,699.11/x
  3. Step 3: Cross multiply
    12,018.35x = 18,030.20 × 3,699.11
  4. Step 4: Simplify right side
    12,018.35x = 66,695,584.48
  5. Step 5: Solve for x
    x = 66,695,584.48/12,018.35
  6. Step 6: Final answer
    x = 5,549.48

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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.