Home / 13,206.80-18,192.84-11,312.21

Finding the Fourth Proportional to 13,206.80, 18,192.84 and 11,312.21

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Solution

The fourth proportional to 13,206.80, 18,192.84 and 11,312.21 is: 15,582.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,206.80 : 18,192.84 = 11,312.21 : x
  2. Step 2: Convert to fraction form
    13,206.80/18,192.84 = 11,312.21/x
  3. Step 3: Cross multiply
    13,206.80x = 18,192.84 × 11,312.21
  4. Step 4: Simplify right side
    13,206.80x = 205,801,229.64
  5. Step 5: Solve for x
    x = 205,801,229.64/13,206.80
  6. Step 6: Final answer
    x = 15,582.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.