Home / 12,209.36-18,317.12-5,640.19

Finding the Fourth Proportional to 12,209.36, 18,317.12 and 5,640.19

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Solution

The fourth proportional to 12,209.36, 18,317.12 and 5,640.19 is: 8,461.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,209.36 : 18,317.12 = 5,640.19 : x
  2. Step 2: Convert to fraction form
    12,209.36/18,317.12 = 5,640.19/x
  3. Step 3: Cross multiply
    12,209.36x = 18,317.12 × 5,640.19
  4. Step 4: Simplify right side
    12,209.36x = 103,312,066.09
  5. Step 5: Solve for x
    x = 103,312,066.09/12,209.36
  6. Step 6: Final answer
    x = 8,461.71

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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.