Home / 28,768.90-39,697.40-16,191.22

Finding the Fourth Proportional to 28,768.90, 39,697.40 and 16,191.22

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Solution

The fourth proportional to 28,768.90, 39,697.40 and 16,191.22 is: 22,341.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,768.90 : 39,697.40 = 16,191.22 : x
  2. Step 2: Convert to fraction form
    28,768.90/39,697.40 = 16,191.22/x
  3. Step 3: Cross multiply
    28,768.90x = 39,697.40 × 16,191.22
  4. Step 4: Simplify right side
    28,768.90x = 642,749,336.83
  5. Step 5: Solve for x
    x = 642,749,336.83/28,768.90
  6. Step 6: Final answer
    x = 22,341.81

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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.