Home / 13,230.96-18,260.17-8,455.30

Finding the Fourth Proportional to 13,230.96, 18,260.17 and 8,455.30

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Solution

The fourth proportional to 13,230.96, 18,260.17 and 8,455.30 is: 11,669.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,230.96 : 18,260.17 = 8,455.30 : x
  2. Step 2: Convert to fraction form
    13,230.96/18,260.17 = 8,455.30/x
  3. Step 3: Cross multiply
    13,230.96x = 18,260.17 × 8,455.30
  4. Step 4: Simplify right side
    13,230.96x = 154,395,148.61
  5. Step 5: Solve for x
    x = 154,395,148.61/13,230.96
  6. Step 6: Final answer
    x = 11,669.24

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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.