Home / 12,422.13-18,639.89-9,654.36

Finding the Fourth Proportional to 12,422.13, 18,639.89 and 9,654.36

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Solution

The fourth proportional to 12,422.13, 18,639.89 and 9,654.36 is: 14,486.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,422.13 : 18,639.89 = 9,654.36 : x
  2. Step 2: Convert to fraction form
    12,422.13/18,639.89 = 9,654.36/x
  3. Step 3: Cross multiply
    12,422.13x = 18,639.89 × 9,654.36
  4. Step 4: Simplify right side
    12,422.13x = 179,956,160.15
  5. Step 5: Solve for x
    x = 179,956,160.15/12,422.13
  6. Step 6: Final answer
    x = 14,486.74

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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.