Home / 20,107.40-30,128.70-16,802.60

Finding the Fourth Proportional to 20,107.40, 30,128.70 and 16,802.60

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Solution

The fourth proportional to 20,107.40, 30,128.70 and 16,802.60 is: 25,176.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,107.40 : 30,128.70 = 16,802.60 : x
  2. Step 2: Convert to fraction form
    20,107.40/30,128.70 = 16,802.60/x
  3. Step 3: Cross multiply
    20,107.40x = 30,128.70 × 16,802.60
  4. Step 4: Simplify right side
    20,107.40x = 506,240,494.62
  5. Step 5: Solve for x
    x = 506,240,494.62/20,107.40
  6. Step 6: Final answer
    x = 25,176.83

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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.