Home / 28,131.30-42,190.20-16,259.40

Finding the Fourth Proportional to 28,131.30, 42,190.20 and 16,259.40

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Solution

The fourth proportional to 28,131.30, 42,190.20 and 16,259.40 is: 24,385.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,131.30 : 42,190.20 = 16,259.40 : x
  2. Step 2: Convert to fraction form
    28,131.30/42,190.20 = 16,259.40/x
  3. Step 3: Cross multiply
    28,131.30x = 42,190.20 × 16,259.40
  4. Step 4: Simplify right side
    28,131.30x = 685,987,337.88
  5. Step 5: Solve for x
    x = 685,987,337.88/28,131.30
  6. Step 6: Final answer
    x = 24,385.20

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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.