Home / 28,885.16-39,859.60-16,784.56

Finding the Fourth Proportional to 28,885.16, 39,859.60 and 16,784.56

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Solution

The fourth proportional to 28,885.16, 39,859.60 and 16,784.56 is: 23,161.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,885.16 : 39,859.60 = 16,784.56 : x
  2. Step 2: Convert to fraction form
    28,885.16/39,859.60 = 16,784.56/x
  3. Step 3: Cross multiply
    28,885.16x = 39,859.60 × 16,784.56
  4. Step 4: Simplify right side
    28,885.16x = 669,025,847.78
  5. Step 5: Solve for x
    x = 669,025,847.78/28,885.16
  6. Step 6: Final answer
    x = 23,161.58

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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.