Home / 20,755.10-31,149.23-10,762.68

Finding the Fourth Proportional to 20,755.10, 31,149.23 and 10,762.68

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Solution

The fourth proportional to 20,755.10, 31,149.23 and 10,762.68 is: 16,152.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,755.10 : 31,149.23 = 10,762.68 : x
  2. Step 2: Convert to fraction form
    20,755.10/31,149.23 = 10,762.68/x
  3. Step 3: Cross multiply
    20,755.10x = 31,149.23 × 10,762.68
  4. Step 4: Simplify right side
    20,755.10x = 335,249,221.64
  5. Step 5: Solve for x
    x = 335,249,221.64/20,755.10
  6. Step 6: Final answer
    x = 16,152.62

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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.