Home / 28,109.60-42,135.60-16,416.80

Finding the Fourth Proportional to 28,109.60, 42,135.60 and 16,416.80

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Solution

The fourth proportional to 28,109.60, 42,135.60 and 16,416.80 is: 24,608.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,109.60 : 42,135.60 = 16,416.80 : x
  2. Step 2: Convert to fraction form
    28,109.60/42,135.60 = 16,416.80/x
  3. Step 3: Cross multiply
    28,109.60x = 42,135.60 × 16,416.80
  4. Step 4: Simplify right side
    28,109.60x = 691,731,718.08
  5. Step 5: Solve for x
    x = 691,731,718.08/28,109.60
  6. Step 6: Final answer
    x = 24,608.38

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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.