Home / 28,385.60-39,170.40-16,446.86

Finding the Fourth Proportional to 28,385.60, 39,170.40 and 16,446.86

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Solution

The fourth proportional to 28,385.60, 39,170.40 and 16,446.86 is: 22,695.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,385.60 : 39,170.40 = 16,446.86 : x
  2. Step 2: Convert to fraction form
    28,385.60/39,170.40 = 16,446.86/x
  3. Step 3: Cross multiply
    28,385.60x = 39,170.40 × 16,446.86
  4. Step 4: Simplify right side
    28,385.60x = 644,230,084.94
  5. Step 5: Solve for x
    x = 644,230,084.94/28,385.60
  6. Step 6: Final answer
    x = 22,695.67

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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.