Home / 20,107.45-30,130.41-10,748.80

Finding the Fourth Proportional to 20,107.45, 30,130.41 and 10,748.80

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Solution

The fourth proportional to 20,107.45, 30,130.41 and 10,748.80 is: 16,106.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,107.45 : 30,130.41 = 10,748.80 : x
  2. Step 2: Convert to fraction form
    20,107.45/30,130.41 = 10,748.80/x
  3. Step 3: Cross multiply
    20,107.45x = 30,130.41 × 10,748.80
  4. Step 4: Simplify right side
    20,107.45x = 323,865,751.01
  5. Step 5: Solve for x
    x = 323,865,751.01/20,107.45
  6. Step 6: Final answer
    x = 16,106.75

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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.