Home / 20,809.38-31,281.74-16,694.40

Finding the Fourth Proportional to 20,809.38, 31,281.74 and 16,694.40

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Solution

The fourth proportional to 20,809.38, 31,281.74 and 16,694.40 is: 25,095.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809.38 : 31,281.74 = 16,694.40 : x
  2. Step 2: Convert to fraction form
    20,809.38/31,281.74 = 16,694.40/x
  3. Step 3: Cross multiply
    20,809.38x = 31,281.74 × 16,694.40
  4. Step 4: Simplify right side
    20,809.38x = 522,229,976.69
  5. Step 5: Solve for x
    x = 522,229,976.69/20,809.38
  6. Step 6: Final answer
    x = 25,095.89

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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.