Home / 13,188.36-18,199.48-7,880.04

Finding the Fourth Proportional to 13,188.36, 18,199.48 and 7,880.04

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Solution

The fourth proportional to 13,188.36, 18,199.48 and 7,880.04 is: 10,874.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.36 : 18,199.48 = 7,880.04 : x
  2. Step 2: Convert to fraction form
    13,188.36/18,199.48 = 7,880.04/x
  3. Step 3: Cross multiply
    13,188.36x = 18,199.48 × 7,880.04
  4. Step 4: Simplify right side
    13,188.36x = 143,412,630.38
  5. Step 5: Solve for x
    x = 143,412,630.38/13,188.36
  6. Step 6: Final answer
    x = 10,874.18

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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.