Home / 28,760.85-39,688.47-16,186.41

Finding the Fourth Proportional to 28,760.85, 39,688.47 and 16,186.41

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Solution

The fourth proportional to 28,760.85, 39,688.47 and 16,186.41 is: 22,336.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,760.85 : 39,688.47 = 16,186.41 : x
  2. Step 2: Convert to fraction form
    28,760.85/39,688.47 = 16,186.41/x
  3. Step 3: Cross multiply
    28,760.85x = 39,688.47 × 16,186.41
  4. Step 4: Simplify right side
    28,760.85x = 642,413,847.69
  5. Step 5: Solve for x
    x = 642,413,847.69/28,760.85
  6. Step 6: Final answer
    x = 22,336.40

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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.