Home / 12,187.10-18,272.55-5,609.90

Finding the Fourth Proportional to 12,187.10, 18,272.55 and 5,609.90

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Solution

The fourth proportional to 12,187.10, 18,272.55 and 5,609.90 is: 8,411.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.10 : 18,272.55 = 5,609.90 : x
  2. Step 2: Convert to fraction form
    12,187.10/18,272.55 = 5,609.90/x
  3. Step 3: Cross multiply
    12,187.10x = 18,272.55 × 5,609.90
  4. Step 4: Simplify right side
    12,187.10x = 102,507,178.25
  5. Step 5: Solve for x
    x = 102,507,178.25/12,187.10
  6. Step 6: Final answer
    x = 8,411.12

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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.