Home / 12,090.16-18,140.82-5,518.36

Finding the Fourth Proportional to 12,090.16, 18,140.82 and 5,518.36

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Solution

The fourth proportional to 12,090.16, 18,140.82 and 5,518.36 is: 8,280.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,090.16 : 18,140.82 = 5,518.36 : x
  2. Step 2: Convert to fraction form
    12,090.16/18,140.82 = 5,518.36/x
  3. Step 3: Cross multiply
    12,090.16x = 18,140.82 × 5,518.36
  4. Step 4: Simplify right side
    12,090.16x = 100,107,457.16
  5. Step 5: Solve for x
    x = 100,107,457.16/12,090.16
  6. Step 6: Final answer
    x = 8,280.08

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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.