Home / 28,115.80-42,173.70-16,289.80

Finding the Fourth Proportional to 28,115.80, 42,173.70 and 16,289.80

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Solution

The fourth proportional to 28,115.80, 42,173.70 and 16,289.80 is: 24,434.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,115.80 : 42,173.70 = 16,289.80 : x
  2. Step 2: Convert to fraction form
    28,115.80/42,173.70 = 16,289.80/x
  3. Step 3: Cross multiply
    28,115.80x = 42,173.70 × 16,289.80
  4. Step 4: Simplify right side
    28,115.80x = 687,001,138.26
  5. Step 5: Solve for x
    x = 687,001,138.26/28,115.80
  6. Step 6: Final answer
    x = 24,434.70

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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.