Home / 18,674.73-28,029.68-12,439.13

Finding the Fourth Proportional to 18,674.73, 28,029.68 and 12,439.13

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Solution

The fourth proportional to 18,674.73, 28,029.68 and 12,439.13 is: 18,670.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,674.73 : 28,029.68 = 12,439.13 : x
  2. Step 2: Convert to fraction form
    18,674.73/28,029.68 = 12,439.13/x
  3. Step 3: Cross multiply
    18,674.73x = 28,029.68 × 12,439.13
  4. Step 4: Simplify right side
    18,674.73x = 348,664,631.03
  5. Step 5: Solve for x
    x = 348,664,631.03/18,674.73
  6. Step 6: Final answer
    x = 18,670.40

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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.