Home / 13,183.30-18,192.40-7,881.04

Finding the Fourth Proportional to 13,183.30, 18,192.40 and 7,881.04

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Solution

The fourth proportional to 13,183.30, 18,192.40 and 7,881.04 is: 10,875.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,183.30 : 18,192.40 = 7,881.04 : x
  2. Step 2: Convert to fraction form
    13,183.30/18,192.40 = 7,881.04/x
  3. Step 3: Cross multiply
    13,183.30x = 18,192.40 × 7,881.04
  4. Step 4: Simplify right side
    13,183.30x = 143,375,032.10
  5. Step 5: Solve for x
    x = 143,375,032.10/13,183.30
  6. Step 6: Final answer
    x = 10,875.50

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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.