Home / 12,449.19-18,660.31-6,128.43

Finding the Fourth Proportional to 12,449.19, 18,660.31 and 6,128.43

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Solution

The fourth proportional to 12,449.19, 18,660.31 and 6,128.43 is: 9,186.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,449.19 : 18,660.31 = 6,128.43 : x
  2. Step 2: Convert to fraction form
    12,449.19/18,660.31 = 6,128.43/x
  3. Step 3: Cross multiply
    12,449.19x = 18,660.31 × 6,128.43
  4. Step 4: Simplify right side
    12,449.19x = 114,358,318.32
  5. Step 5: Solve for x
    x = 114,358,318.32/12,449.19
  6. Step 6: Final answer
    x = 9,186.00

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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.