Home / 12,979.64-19,457.03-8,286.41

Finding the Fourth Proportional to 12,979.64, 19,457.03 and 8,286.41

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Solution

The fourth proportional to 12,979.64, 19,457.03 and 8,286.41 is: 12,421.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979.64 : 19,457.03 = 8,286.41 : x
  2. Step 2: Convert to fraction form
    12,979.64/19,457.03 = 8,286.41/x
  3. Step 3: Cross multiply
    12,979.64x = 19,457.03 × 8,286.41
  4. Step 4: Simplify right side
    12,979.64x = 161,228,886.53
  5. Step 5: Solve for x
    x = 161,228,886.53/12,979.64
  6. Step 6: Final answer
    x = 12,421.68

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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.