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Finding the Fourth Proportional to 28,106.67, 42,160.01 and 8,399.07

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Solution

The fourth proportional to 28,106.67, 42,160.01 and 8,399.07 is: 12,598.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,106.67 : 42,160.01 = 8,399.07 : x
  2. Step 2: Convert to fraction form
    28,106.67/42,160.01 = 8,399.07/x
  3. Step 3: Cross multiply
    28,106.67x = 42,160.01 × 8,399.07
  4. Step 4: Simplify right side
    28,106.67x = 354,104,833.20
  5. Step 5: Solve for x
    x = 354,104,833.20/28,106.67
  6. Step 6: Final answer
    x = 12,598.61

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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.