Home / 28,766.40-39,693.96-16,188.72

Finding the Fourth Proportional to 28,766.40, 39,693.96 and 16,188.72

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Solution

The fourth proportional to 28,766.40, 39,693.96 and 16,188.72 is: 22,338.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,766.40 : 39,693.96 = 16,188.72 : x
  2. Step 2: Convert to fraction form
    28,766.40/39,693.96 = 16,188.72/x
  3. Step 3: Cross multiply
    28,766.40x = 39,693.96 × 16,188.72
  4. Step 4: Simplify right side
    28,766.40x = 642,594,404.13
  5. Step 5: Solve for x
    x = 642,594,404.13/28,766.40
  6. Step 6: Final answer
    x = 22,338.37

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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.