Home / 20,034.70-27,639.20-12,072.40

Finding the Fourth Proportional to 20,034.70, 27,639.20 and 12,072.40

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Solution

The fourth proportional to 20,034.70, 27,639.20 and 12,072.40 is: 16,654.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,034.70 : 27,639.20 = 12,072.40 : x
  2. Step 2: Convert to fraction form
    20,034.70/27,639.20 = 12,072.40/x
  3. Step 3: Cross multiply
    20,034.70x = 27,639.20 × 12,072.40
  4. Step 4: Simplify right side
    20,034.70x = 333,671,478.08
  5. Step 5: Solve for x
    x = 333,671,478.08/20,034.70
  6. Step 6: Final answer
    x = 16,654.68

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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.